Burmese resentment was strong and was vented in violent riots that paralysed Yangon (Rangoon) on occasion all the way until the 1930s. Some of the discontent was caused by a disrespect for Burmese culture and traditions such as the British refusal to remove shoes when they entered pagodas. Buddhist monks became the vanguards of the independence movement. U Wisara, an activist monk, died in prison after a 166-day hunger strike to protest against a rule that forbade him from wearing his Buddhist robes while imprisoned.