I don’t mind that. First, notice the 2nd line of cops in the back still ready to act if necessary. Second, It can show you are with PEACEFUL protesters without kneeling in submission.
With our military? I don't know. I think these are National Guard - so still closer to the “citizens”.
The main drawback to me would be that the protesters see the troops on “Their side”. That is fine, and correct, when they are protesting peacefully and exercising their 1A rights. As long as they don't think the troops are on their side when it comes to vandalism and looting, or, that the troops are against our government or President Trump. Which these protests have morphed into.