Give him credit where credit is due. Say that yes, unfortunately thousands did die during the crusades. However, go on to explain what the crusades were really about. There is a thread floating around here already that will be extremely helpful to you.
He goes like it’s a fact and adds more and more accusations that it is evil, pagan, bla bla bla.
I would take these accusations one at a time and, as Voci pointed out, as him what these accusations are based on. If he’s got a ton of accusations maybe you would get him to agree to discuss only one of them in any given conversation and agree with him which one it will be ahead of time so you can be equipped for the conversation.
He added that in the Bible, it says “Beware of prophets that wear…” i forgot what it was, but he’s saying that our priests are false prophets because of what they wear.
Well, to help with that we’ll need to know exactly what it is that he thinks the Bible says. Ask him for the book, chapter, and verse.
He also says Caholics don’t read and know the Bible that much.
To this I would say, you’re correct that many Catholics do not read the Bible as much as they should and generally speaking Protestants are better at quoting Bible verses than Catholics. Then go on to explain that most practicing Catholic do know the Bible because they hear it read, in almost its entirety, every three years by simply attending Mass.
He is kinda a geek and goes to Hillsong Church (protestant denomination).
I’m not sure what these two facts have to do with one another or why they have been tied together in a single sentence. However, if you’re going to have apologetics type discussions with this person you will need to get your facts straight as well. Hillsong Church is not a Protestant denomination. Hillsong Church is a church within the Pentecostal denomination. (It took me about 30 seconds to figure that out from half-way around the world thanks to google.) This is important information because the Pentecostals tend to be big on speaking in tongues – as evidenced by the name. This gives you an avenue into doing the same thing to him. Get your Biblical references on what Paul says about speaking in tongues and when it should be done. The Pentecostals do not follow what Paul says. (I’m intentionally being vague so you’ll do some research on this.)
I think he got all this jiba jaba from watching Discovery, History, and National Geographic channels, and reading atheist and anti-catholic websites.
Probably from all those places and talking to some former Catholics that he attends church with. I know I’m constantly telling my fellow parishioners that talking bad about Catholics is in direct conflict with Scriptural teachings about loving your neighbors.
How do I respond to this? Are some of his accusations true? Is it a fact that the Catholic church commited murder during those days?
Research the Crusades and the Inquisition, there is a thread floating around here that will help you with that.
I get irritated whenever people like him talks sh1t like that. It kills me… All I could tell him is that “you should not be talking like that because religion is a big topic. you should have respect to people’s beliefs just like I respect what you believe…”
That is a good place to start. You can insist on reasonable, rational, and respectful dialogue. But don’t refuse dialogue if it is engaged in with both parties respecting those ground rules. The dialogue is what apologetics is all about.
But I want to say something that will shatter him and prove him wrong that the Catholic Church is not what he thinks it is.
If you’re looking to win then you have the wrong objective in mind. The only thing that you can do is be a good emissary. Show him Love and respect while at the same time correcting his error patiently and kindly. I can tell you right now you’re not going to “shatter” him. You’ll probably not “prove” him wrong on anything, and definitely won’t “prove” him wrong on everything, because he’ll have to accept your proof. What you will be able to do is give him some food for thought. But remember that the way you approach the dialogue is at least, if not more, important than what you actually say. When doing apologetics always remember what St. Francis said, “Preach the Gospel always; use words when you have to.”