Hindu Muslim Unity! 
The Khilafat Committee died a natural death after  the abolition of the Caliphate by Kemal Pasha in 1924. The  Hindu-Muslim unity brought about by Gandhi in 1920-21 was artificial  in character and did not produce any real change of heart. It was  based on common hatred for the Brits, for different reasons though,  by the Muslims on account of the treatment meted out to the  Caliphate, by the Hindus for Swaraj. The so-called Nationalists  Muslims who had joined Gandhi in 1921 were really Pan-Islamists who  merely exploited Gandhi for securing redress of the Khilafat wrong.  As soon as the Khilafat agitation came to an end, they showed their  true colors.
M Ali in another vein, after explaining why the  Muslim loyalty to the Brit Govt is incompatible with their loyalty to  Islam, said Muhammad Ali in his Presidential Address to the Congress  in 1923 “And if we may not co-operate with Great Britian, is it  expedient, to put it on the lowest plane, to cease to co-operate with  our non-Muslim brethren. What is that happened since that staunch  Hindu, Gandhi, went to gaol for advocating the cause of Islam, that  we must cease to co-operate with his co-religionists”. 
The Khilafat Movement patronized by Gandhi and the  Congress, massacre of the Hindus by the Moplahs, connived at by the  Congress and to a certain extent by the Indian Press which blindly  followed the Congress left the Hindu Mahasabha as the only organized  body to protect the purely Hindu interest. 
Early in 1923, there were serious communal clashes  in Multan and Amritsar. Later in the year the Muslims started a  definite communal movement called Tanzeem and Tabligh in order to  organize the Muslims as a virile community. 
Said Dr Saifuddin K, a well known Muslim leader to  the Hindus of Lahore, “Listen my dear Hindu brothers, listen  very attentively. If you put obstacles in the path of our Tanzim  movement, and do not give us our rights, we shall make common cause  with Afghanistan or some other Muslim country and establish rule over  India”. 
The Moplah atrocities were followed by terrible  incidents in Multan where Muslims massacred and plundered Hindus and  outraged the honor of woman with impunity. A still greater tragedy  was enacted at Kohat in North West Frontier Province. One of the  worst riots broke out in Calcutta in May 1923, when an Arya Samaj  procession played music while passing before a mosque. The Aryas  claimed that it was a regular practice that was never objected to  earlier, the Muslims claimed that it disturbed their prayer. In July  1924, riots took place in Delhi on Bakri-id day. Generally riots were  confined to British territory and the Indian states were free from  them.
Hindu leaders like Lala Lajpat Rai and Pandit M M  Malaviya realized that the only way the Hindus could save themselves  was by organizing themselves. This was accompanied by the Shuddhi  Movement referred to above. Not only did this irritate the Muslims  but also the Hindu leaders of the Congress looked at these movements  as impediments of Hindu Muslim unity. The Banaras session of the  Hindu Mahasabha, in Aug 1923, was attended by 1500 delegates and  visitors belonging to Sikh, Jain, Buddhist, Samantists and Arya  Samaji sects.
Subsequent to the aggressive Shuddhi Movement by  the Arya Samajis, the Muslims were highly agitated. The Samajis were  infringing on their 1200 years monopoly so they decided to murder a  great proponent of the Shuddhi movement Swami Shraddhananda in his  sick bed in 1926. 
Pattabhi Sitaramayya wrote, “At the Gauhati  Congress Session of 1926, Gandhi expounded what true religion was and  explained the causes that led to the murder. Now you will perhaps  recall why I have called Abdul Rashid (the murderer) my brother and I  repeat it. I do not hold him guilty but Guilty are those who excited  feelings of hatred against one another”.
This happened a few years after the phasad of  Hindu Muslim camaraderie during the Khilafat movement. This agitated  the Arya Samajis no end but those who thought unilateral concessions  to Muslims was the only way to promote Hindu Muslim unity found fault  with aggressive activities of the Samaj. In protest, the  International Aryan League convened an Indian Aryan Congress in  November 1927. It was presided over by eminent leader Lala Hans Raj  and attended by Lala Lajpat Rai and Pandit Madan Mohan Malviya. 
It is very significant that during this period of  great communal tension Gandhi kept himself aloof. He probably gave up  any attempt at communal harmony by negotiation after his failure in  Lahore in 1924. These events only increased the suspicion, mistrust  and hatred between two communities who have different values,  cultures.
Muhammad Ali, who was Gandhi’s trusted during  the first Satyagraha campaign refused to join him in the second  campaign in 1930. At a meeting of the All India Muslim  Conference at Bombay held in April 1930, attended by over 20,000  Muslims he said “We refuse to join Mr Gandhi, because his movement  is not a movement for the complete independence of India but for  making the seventy million of Indian Musalmans dependants of the  Hindu Mahasabha”. 
He told members of the Round Table Conference  “Islam is not confined to India. I belong to two circles of equal  size but which are not concentric. One is India and the other is  Muslim world. We are not nationalists but super-nationalists. In his  address as Congress President in 1923 he reminded the audience that  “extra-territorial sympathies are part of the quintessence of  Islam”.
It was the Congress which had, in 1916, recognized  the Muslims as a separate political entity. It was Gandhi who, by his  actions in the Khilafat movement, endorsed the view of Muslim leaders  that they were Muslims first and Indians afterwards - that their  interests were more bound up with the fate of the Muslim world  outside India than that of India herself. 
What else but Pakistan could anyone expect  then? 
Also read
1. Thoughts on Pakistan
2. Aligarh Muslim Movement 
3. Understanding the Muslim mind through Dr  Ambedkar
4. A replica of pre-independence Islamism