Opposed "them"...as in many millions of different types of all religions, colors, political leanings and countries? My..now that would be one horrendous effort...like opposing the world.
Your question just shows what you don't understand.
I understand there are those who take a so called neutral position when it comes to organizations and false religions etc. But by not standing for anything one doesn’t stand for anything at all IMO.
As Christians we are called to take a stand for the faith...and that means opposing doctrines and dogmas that directly oppose Christ and His teachings. It is especially important for those organizations and false religions who attempt to use and abuse Christianity verbage, and falsely imitate they are Christian, as bait to draw their targets into their web.