I think you need to be little patient in choosing your words.
1. What do you mean by hard core muslims ? If this is muslims who follows strictly islam, then you are wrong. Islam never teaches for violence like this to do bomb blast, kill brothers in other religion. Some people has taken it wrongly and we need to isolate them joining together.
2. I think you need to learn litle about islam. Otherwise you will not say history of islam is violence. You need to learn the how muhammed and his subsequent four Khaleefas ruled arab country. That is why even Gandhiji said i would like to have Umar's (one of the four Khaleefas) ruling in India.
3. Dont blame muslims totally, these are a group of minority who want spoil our country. We all need to work together to isolate them.
4. Last but not least, you should have the same feeling Great Narendra Modi's goverment killed many thousands of muslim on the street. It was done a formal goverment and a party who believe in democracy. As we know, many great leaders also supported this. He still ruling gujarat in the name of mejority.
We should have a same voice when any body do such kid of terrorism.