I had always heard about The Crusades in a negative way. But in this video, Bob from Speaker's Corner in London, explains why The Crusades started. They were in response to centuries of Islamic invasion of many Christian countries.
Left-Wing liberals have sought to change history. They are revisionists. They are anti-colonization, anti-USA. Columbus is made out to look evil, our founding fathers - evil, and on and on, distorting history.
They try to distort our Jesus. They play the race card all the time, causing division.
Obama clearly rekindled the flames of racism. You'd think, Okay, we elected a black president ... well half black; so that should have put the lid on racism, retribution. Forgiveness, conciliatory ... it's all good should have been the resolve. We were doing fine, came a long way ... but no, he started the fire again, him and his cohort Soros behind the scenes ( Ferguson, Baltimore, BLM movement, etc.), creating turmoil, rioting, protests ... division. We are now as divided as before the Civil War. And why? They hate the country, they want to destroy it, destroy all the sovereignty if all nations in order to implement their New World World, a One World Socialist Government. Destroy the USA from within is the only way - even our founding fathers warned us of that. Open borders? With no borders, you have no country.
SORRY, got carried away. Back to the OP. Islam was problem then and it is the BIG problem now in the world. Frankly I think Islam is the Beast. Iran will not give up, even though their nuclear program was dismantled. They will gather ten nations against Israel and already have most of them lined up. This recent Peace Treaty and Abraham Accords did not include the key players in the end time scenario.