Question: What kind of pilgrims gathered at the protest against Saifuddin Kitchlew's arrest
Sentence (from "Saifuddin Kitchlew"): A public protest rally against their arrest and that of Gandhi, on 13 April 1919 at Jallianwala Bagh, Amritsar, led to the infamous Jallianwala Bagh massacre.
Relevant evidence: Yes