There are only three possible responses you as an individual can have to an ISIS Terror attack.
1. Let it scare you into changing your life until it curtails your freedom. ISIS like this response. It means they have literally terrorised you & changed your way of life.
2. Become hateful and start spouting off about deporting/detaining/killing Muslims. ISIS LOVE this response. It helps them recruit.
3. Stick two fingers up at them, say “We will never give in to you” and go about your business in defiance. This is EXACTLY what ISIS DON’T want. It means they’ve failed.
Pick one. But know the first two mean you are helping the terrorists.