Friday, March 29, 3:29 p.m. EDT: George Zimmerman's brother is "sorry" his tweet offended: Robert Zimmerman has this to say about a photo he tweeted likening Trayvon Martin to an African-American teen accused of murder: "I'm sincerely sorry my tweet offended many - I made a serious error in judgment abt the way it wld convey & understand why it is offensive." He also discussed the incident in an interview with CNN's Piers Morgan Tonight, the Huffington Post reports.

Monday, March 25, 2013, 3:47 p.m. EDT: Racist Twitter tirade from Zimmerman's brother: After it was reported on Saturday that De'Marquise Elkins, a 17-year-old, had been detained as a suspect for shooting and killing a 13-month-old baby, George Zimmerman’s brother, Robert Zimmerman Jr., took to Twitter to offer a racist comparison of Elkins and Trayvon Martin. He did it by tweeting side-by-side photos of Elkins and Trayvon holding up their middle fingers, seemingly arguing that the fact that both African-American boys took photos in a similar pose proved that unarmed teen Trayvon was the guilty party the night George Zimmerman shot and killed him. The caption reads, "A picture speaks a thousand words … Any Questions?" Robert Zimmerman tweeted the photo at Michael Moore, the NAACP, the NRA and a editor. 

Read last week's updates on the Trayvon Martin case here.  

Read all of The Root's news and commentary about the Trayvon Martin case here.