There are several reasons why what you are doing is bigotry.
1. There are Christian terrorists, and rapists, and murderers. But you aren't concerned about them. You aren't warning anyone about Catholic pedophiles, White Supremacists or vigilantes targeting immigrants or homosexuals. There are thousands of murders and rapes committed are committed by Christians each year. You are ignoring them.
2. There are tens of thousands of peaceful Muslim families in the US and elsewhere. They work as engineers (I work with one) and doctors and lawyers. They raise their kids, volunteer in schools... some serve in the military.
That is bigotry. You are judging people based on their religion and ethnicity rather than on who they are as a person. In doing so, you exaggerate the danger from Muslims and ignore the same danger from Christian extremist groups.
- Extremists of any religion are dangerous, be they Christian, Buddhist, Muslim or any other religion.
- Peaceful people of any religion are human beings living respectful decent lives, be they Christian, Buddhist Muslim or any other religion.
You are spreading hatred and fear of a religion, and you are attacking millions of innocent decent people who don't believe what you say they should (which is none of your business any way).
That is bigotry. I oppose extremism... I don't have to attack people in a religion.