Dennis Prager wrote about this on Jewishworldreview.com (just to pull in a non-Christian source).
We hear endlessly about Westboro Baptist Church, a cult made up mostly of the children and grandchildren of the founder, as the extreme Christian right as if millions agree with them while they are denounced by nearly everyone.
When a guy shoot an abortion doctor, he is identified as Christian and every pro-life protestor is lumped in with him.
Every time a Muslim shouts Allah is greater (allahu ackbar) and kills people, thousands of times a year, liberals say it isn't Islam, don't blame Islam, it is the gun/insanity/ignorance - and most immorally this go around, the Christian created atmosphere.
Homosexuality is a CAPITAL offense in ten Muslim nations, from ISIS to Iran, and homosexuality is illegal in dozens of Muslim nations. Christian / liberal secular nations have made homosexuality illegal and given it legal equality (in many) to heterosexual marriage.
And yet liberals are looking at Christians as would-be Taliban (embodied in the quote "tyranny will come wearing a flag and carrying a Bible), ignoring the tyranny that comes wearing a hijab and carrying a Koran, as critics of Islam are killed (Charley Hebdo, Danish cartoonists, Theo Van Gogh, attempt on Pamella Gellar's life and Ayan Hirsi Ali's), as homosexual hate crimes by Muslim migrants spike in the EU and a Muslim shoots up a gay bar in Orlando per the teachings of his mosque (not a lone wolf, then).
It is a case of blame-shifting, choosing to blame the person you don't like for the actions of an evil ideology. They do it in part because they don't want to admit Islam is in a world war to impose its views on the rest, and thus the scope. And it is in part because they see ALL religion as evil, but they assume the Muslims will secularize while the Christians in the secular society are stubborn extremists.
If the shooter had been Christian, you'd see the same continued worship of Islam as perfect and to be protected per multi-culturalism but even more blaming of ALL Christians just as liberals won't blame all Muslims or even the bad ideology that DOES call for death to homosexuals, and IS carried out from fundamentalist groups to multiple nations.