Here come the knee-jerk activists.

Someone twists off, goes on a shooting spree, kills four U.S. Marines and, oh yes, he happens to be Muslim.

How do some of us react: Curtail immigration from Muslim countries. Why, shoot, let’s just ban them altogether.

https://www.washingtonpost.com/world/national-security/chattanooga-shooter-came-from-middle-class-muslim-family/2015/07/16/815c39c2-2c04-11e5-bd33-395c05608059_story.html

Mohammad Abdulazeez grew up in Chattanooga, Tenn., the son of a conservative Muslim couple who came here when the young man was infant. He now is accused of killing four people in a shooting rampage.

What fueled the gunman’s anger? Was he determined to carry out a jihad against the “infidels”?

Who in the world knows what triggered the outburst?

I do believe, though, that we must not react to this tragedy as if it somehow fits some still-unknown pattern.

Abdulazeez might embody all the things many Americans fear the most: a mass attack on Americans by people who are intent on killing all of us.

Then again, he might just be a disturbed young man who had a beef with someone and then snapped.

Those things happen with people of all faiths, ethnic origins or socio-economic backgrounds.