Is it all simple hate of Islamic extremists or could it be caused in part by the behavior of "peacekeepers"?

Popular pundits would have everyone believe that Muslims are just predisposed to hating those who are not Muslims, especially the US. However, if someone came to the US and behaved Boorishly, shooting innocent people, peppering churches with bullets, taking out their frustration and aggression on hapless US citizens, would it not be plausible they would breed some bad blood? Can one win hearts and minds desecrating people’s holy places? Would US citizens feel any different? Could the ”peacekeepers” have had a part in breeding the very enemy they imagined was there naturally?