Growing up watching TV and movie westerns, I came to understand why the bad guys — bank robbers, train robbers, cattle rustlers and the like — wore masks.

They wanted to protect their identity from the sheriff’s, marshals, posses and the assorted white-hat good guys looking to apprehend them or to, well, shoot ’em dead.

I am struck in the present day, therefore, about why these international terrorists keep parading around wearing masks.

The hideous pictures of the Islamic State monster we’ve all seen as he’s preparing to execute those journalists come to mind. FBI and Interpol apparently know the identity of the individual, but haven’t released his name for law-enforcement reasons.

We see other images of terrorists parading around in pickups armed with machine guns. The terrorists are wearing hooded masks.

Al-Qaeda “soldiers” have been recorded participating in training exercises. They’re firing those automatic weapons and acting like soldiers. Again, they’re masked. We can’t see who they are.

I won’t assume for an instant that these individuals are hiding their identities because their so-called “conscience” tells them that terrorizing the world is a bad thing and that they should be ashamed.

However, I will assume they’re hiding behind those masks because of cowardice.

Cowards, sad to say, are a more dangerous enemy than those who are unafraid to reveal their identities. They do their filthy deeds under cloaks of secrecy, then peel the masks off and go about their business right along with the rest of civilized society.

This is a treacherous foe we’re fighting. The masks only affirm their treachery.