The man in charge of security in Ferguson walks with protesters . Missouri Highway Patrol Capt . Ron Johnson was arrested for the incident Thursday . ` ` I ' m here to make sure they know what I ' m talking about , '' Johnson says Friday . State troopers took over security after days of clashes between protesters and local police , who have been accused of using excessive force -- including rubber bullets and tear gas -- in response to the demonstrations . State police took over security in Ferguson after days of unrest .
The man in charge of security in Ferguson walks with protesters . Missouri Highway Patrol Capt . Ron Johnson was arrested for the incident Thursday . ` ` I ' m here to make sure they know what I ' m talking about , '' Johnson says Friday . State police took over security in Ferguson after days of unrest .