They are still relevant because even today there are still many people fighting over what religion is right and what land people want. The events of the crusaders are almost the same as what's going on now. It's just a bunch of people going into others lands and fighting over religion. Even today there are still people holding grudges over the crusaders and what they did. It’s almost as if we have made very little progress over all the years.
P2
What the crusaders did was bad and it shouldn't have happened but just because it did doesn't mean we should continue to act that way. Modern society can learn that we shouldn't have wars or fights over things like this. We should just all fully accept that not everyone will agree on the same things.