 Complete the following phrase:  Al-Aref attended the Nebi Musa religious festival in Jerusalem in 1920 riding on his horse, and gave a speech at the Jaffa Gate. The nature of his speech is disputed. According to Benny Morris, he said If we dont use force against the Zionists and against the Jews, we will never be rid of them, while Bernard Wasserstein wrote he seems to have co-operated with the police, and there is no evidence that he actively instigated violence. In fact, Zionist intelligence reports of this period are uimous in stressing that he spoke repeatedly against violence. Soon the festival became a 