Well to start we can educate our kids the correct doctrine and the correct history.
Being a student once myself I got out of school conditioned to feel sorry for the crusades and slavery. As kids we are much more influenceable. Youngsters often take specific narratives the way they come without questioning them and digging up the truths of it.
Not one crime, not one, can be justified through the christian lifestyle. Churches could punish a lot of people because most people did not know how to read. Yet it was genuine christians that thought it was important that people learned how to read. That they could behold the gospel with their own eyes. With Greece philosophy and christianity a great educational system was built in the west. Nobelprice winners were once scientists which were schooled in christian schools. Great medical breakthroughs are attained through christian scientific facilities. Now most winners are political influenced. Throwing the child out with bathwater wasn’t a good thing neither.
Even the crusades were not out of the blue, but were a reply to the muslim invasion of Jerusalem. It later was needed to defend Europe from other invasions and also the regain Spain from islamic invasion.
When we put all weight in the scale, we see we have a bad history. But the good always prevails when the majority starts speaking and acting up. Once people got to know what the Bible was really saying we had wonderful family traditions and values. We demolished slavery and gave everyone equal rights. The west was going up and not going down. Until some dictators enters the scene....
There are always a few stirring up the masses to achieve their goals. They used to abuse religion for this, now the mass is too educated. Now they need to fool the people through politics and media outlets.
I really see people being dumbed down and not being educated anymore. It is in our educational system and we need to watch this above draconian measures and engage this through His spirit in His strenght.