I don’t think it was a misunderstood statement calling for peace. I just don’t think it ‘glorifies violence’. What’s so horrific about taking a stand against protests/riots that have gotten out of hand? I think this dichotomy of a message that’s either calling for peace or glorifying violence is the wrong lens to be viewing this post through.
I think that basically what Trump said is this, and I think this is actually true because it explains his later post on how the secret service dealt with the rioters: you have to be strong - strong as in, show the minimal amount of force necessary to dissolve this riot. This, I think, is much closer to the jist of his message.