In answer to your initial question, you are, seeing as you’re talking about banning Islam.
The context of your remarks is quite clear - it’s a hyper-emotional, knee-jerk, reactionary, response to a couple of terrorist attacks, ie. the exact sort of response that needs to be avoided.
You talk about left-wing people such as myself exaggerating things. Again, you’re guilty of the exact same thing you erroneously accuse others of.
Nobody has said radical Islamism isn’t a problem or that it shouldn’t be confronted. It’s just that some of us have actually studied history and understand that rectionary responses which are essentially fuelled by emotion, fear and hatred don’t solve anything, they make problems a hundred times worse than any problem which currently exists.
It’s abundantly clear that you have no such understanding.