Why would anyone follow a faith that is responsible for the death of thousands of people that would not follow

their teaching of christanity such as the catholics did for hundreds of years....how can their faith be anything other than a demonic instution....their faith killed thousands upon thousands of people in europe just because they would not denounce their faith and convert to being catholic...there is much doented truth to this and it is easy for anyone to find that wishes to seek out the truth about this most evil religious group