The funny thing here is if a "muslim" would be peaceful, will you think the contrary or not? I hope you understand what I wanted to say.
There are peaceful muslims as well and it's not possible that all those who believe in Islam are terrorists or ISIS leaders/members. The issue here is that there are some who interpret the holy book of Islam as one that spreads violence and hate and hence they believe that the religion teaches others to hate. They don't understand that they are actually supporting the words of these evil people (terrorists/ISIS) who spread the wrong message. They are the ones who are responsible for this hatred towards Islam and people just blindly believe them.
People earlier used to believe that Muslims should only marry within their caste and they used to kill others who used to marry hindus and other castes. Now that's not the case and there are so many inter caste marriages which proves that there is a change in the thoughts of many Muslims.
It's wrong if people start cursing the people who are Muslims just because of these terror attacks.