It might not be a bad idea to shake the hand of every LEO present at the rally and thank them for their service. Imagine the sight of thousands of gun owners shaking hands, having conversations, and showing appreciation with every LEO in the area.
It might go a long way in showing the LEO community that we're all on the same side. It could also alleviate any uncertainties between gun owners and LEOs on that day or possibly deepen one's belief that protecting the Rights of the people they serve to protect is just as important. Maybe.....just maybe.....change the mind of a gun-control favoring LEO.
Anyway, just a thought that I wanted to throw out there. Take care.