[quote=@Dynamo Frokane]
<Snipped quote by Savato>

I don't know if its the worst but its definitely in the top 5
[/quote]

It becomes really complicated by how many different flavors each religion comes equipped with. So yeh, ISIS style ultra-conservative Islam is pure poison. But that is complicated by the fact that most of the people actively fighting against ISIS are also Muslim. Likewise, western Christianity seems to have been more or less tamed in the last few hundred years, but at the same time there are still those fucks who blow up abortions clinics. There are even aggressive Buddhists out there ffs. 

Personally I think religion tends to be a tribal thing in these cases. If we do end up going through another rash of fascistic nationalist movements, we can say it started with radical Islam, because really that's what those fuckers are playing at. It's like Sunni nationalism.