Liberals never admit mistakes. Because to be a liberal in the first place you have to have a tremendous inability to face reality.
Libs are hell bent on trying to prove nasty, right-wing Christians are going around killing non-Christians by the thousands in the name of Christ. The fact that that's not occurring or that people killing in the name of Christ are condemned by the 99% Christians does not faze them in the slightest. They're like the people who are convinced all sports contests are rigged. You ask them for proof, and they just answer you can't prove they weren't rigged.
In short, there is no amount of proof that will convince them they're wrong about anything.
A short list of lib myths exposed as lies.....rape on college campi, hate crimes on college campi and elsewhere, Christians going around killing people in the name of Christ, socialism as a great economic theory (see Venezuela, Cuba, North Korea), and last but not least, peaceful Muslims who are provoked by evil, Christians into committing acts of violence.
That is a very good summary.
My only input is that Obama and the Global Left are sweating after Orlando. Their rhetorical facade is crumbling around them as more and more Muslims openly oppose, eschew, and ridicule, their 'oh so enlightened and politically correct' bullshit. A radical Muslim doesn't have one damn to give for anything Obama, the Liberal/Academic elites, or the Hollywood Left, have to say to characterize who they are or what they 'really' believe. They are going to continue killing regardless of how much money and benefits the Left bestows upon them, or how 'nice' the Left attempts to treat them. The Global Left simply cannot conceive of such an idea or they are unable to comprehend that none of their 'niceness' matters to fanatics.
Muslim fanatics have no desire or intention to integrate with the West. They will never come to accept the 'enlightened beneficence' of Liberal theology as being superior to their own 7th century beliefs. And, they do not now, and never have, made any secret of their intentions.
Obama and the Left are sweating because the closer the Muslims come to Western society the harder it becomes for the PC crowd to continue to mop up the bloody trail of slavery, rape, and murder, that they invariably leave everywhere they go, including now, in America.
Obama and the Left are at the beginning stage of considering the inconceivable. They are just at the very edge of thinking that maybe, there may actually be a real, very distant and remote possibility that the whole plan they have to "integrate/indoctrinate" the Muslim world may actually fail. And since Liberals are never, ever, ever, never, wrong about anything, obviously they have no 'plan B', except to hop on their private jets and hide in the South Pacific for a few years until the issue is resolved one way or another, just as they always wind up fleeing from the very countries in which they found a socialist government after everything falls apart, which it always does.
When Obama gave his 'anger speech' after the shooting, he wasn't angry at the shooter. He was not angry at Islam for the hate and violence they promote and carry out. He was not grieving for the victims. I don't think he gives a damn about all that. He was angry and embarrassed about being proven wrong, on a practical and philosophical level.
As with every single thing about Obama since he was introduced 8 years ago, the only things Obama really, truly, cares about on a deep and spiritual level, is himself, and somehow proving to the world that his own personal interpretation of Islam, what he calls 'true Islam', is the correct version of his religion, even if it is practiced nowhere on Earth and does not really exist anywhere, except in his own imagination.