O you who believe! do not take the Jews and the Christians for friends; they are friends of each other; and whoever amongst you takes them for a friend, then surely he is one of them; surely Allah does not guide the unjust people - Quran 5:51
FR had at least one or two long lists of relevant violent passages in the Quran about lying to infidels, being sure to kill infidels and so on. Parts the gentle and kind neighbor Muslims skip over, they say, but the militants underline and fight for.
I have had Muslims tell me this is like only some people being strictly fanatical in any religion versus those who take only what is meaningful to follow. Maybe they were lying to me, the infidel.