Police in uniform and plain clothes were watching. Near the metro station today a mother was in mourning for her 15yearold son John Rufus Evans iii, police say stabbed to death yesterday by 18yearold javonte hall. I did know the boys name coming up in a conversation with him and his friends trying to attack my daughter a few weeks ago. Throwing juice cartons at her. Saying they were going to jump my son. Sam at a News Conference today the police said the public helped i. D. And close the case in ten hours and mayor bowser emphasized camera and media. There are cameras all over the system. Any incident like this will be caught on tape. The perpetrators of those incidents will be brought to justice. Sam Police Believe social media played a role. They fight, somebody records. They post, they want to get a lot of hits. A lot social media and they go back and forth. Even with this situation, you know, the young people are talking about retaliating on social media. John evans was a student a