BREAKING: A man wearing a vest, helmet and a backpack near President Trump's Dallas rally counter-protestors was just detained by Dallas police. Officers confiscated a gun, breathing mask, knee pads & some type of aerosol can. https://t.co/zzfDcobO0o pic.twitter.com/jqr1UgAaIe

— NBC DFW (@NBCDFW) October 17, 2019