The man in charge of security in St. Louis walks with protesters . State Highway Patrol Capt . Johnson was tapped for the job Friday . Michael Brown , who was unarmed , died in the Saturday shooting . `` I 'm here to make sure they hear what I 'm talking about , '' Ron Johnson says Friday . State troopers took over security in Ferguson after days of clashes .
The man in charge of security in St. Louis walks with protesters . State Highway Patrol Capt . Johnson was tapped for the job Friday . `` I 'm here to make sure they hear what I 'm talking about , '' Ron Johnson says Friday . State troopers took over security in Ferguson after days of clashes .