today, jurors heard two drastically different perspectives on what happened the day arbery died. during closing arguments, prosecutors said the three white men on trial assumed the worst about a 25-year-old black man running in their neighborhood, chased him down, and killed him. in contrast, one of the defense attorneys argued that the men had a duty to catch arbery, whom she described as a frightening burglar with -- and i quote -- long, dirty toenails. martin savidge has the latest from georgia. >> reporter: as the trial reaches its critical final days, protests outside the glenn county courthouse have grown in size and volume. for the first time, armed citizens with semiautomatic weapons were seen patrolling the perimeter of perimeter courthouse grounds, while inside the courthouse, attorneys began making closing arguments. travis mcmichael, his father gregory mcmichael, and william roddy bryan face murder charges and potential life in prison for the killing of 25-year-old jogger ahmaud arbery. >> this case is really about assumptions and driveway