If you are suggesting that other Christians are at this time burning or killing people for not converting, please point them out. If your point is that other Christians did this in the past, that is true, and was unfortunately true of essentially all Christian groups that had power in a national state.
I am not doing so, but admit that many Christian denominations did so in the past. However, we do know that Muslims and Hindus have - and continue to - killed Christians simply for being Christian, and refusing to convert. Yet these are the very people who will be in Heaven with you, according to the Catechism.