By Randy Hall | July 12, 2013 | 8:00 PM EDT

What does a liberal cable television host do when a guest confronts her with an ugly truth? Why, she cuts off his microphone, of course!

That's what happened on Thursday, when Nancy Grace -- host of a weeknight program on HLN, which was formerly known as the Headline Network -- clashed with Frank Taaffe, a friend of George Zimmerman who stated that black teenager Trayvon Martin had drugs in his system during their encounter on Feb. 26, 2012, in Sanford, Fla.

By Ken Shepherd | March 21, 2012 | 12:20 PM EDT

Jeff Burnside of Miami NBC affiliate WTVJ has a brief story accessible on MSNBC.com in which a fellow neighborhood watch volunteer defended George Zimmerman, who claims to have shot teenager Trayvon Martin in self-defense late last month. While the MSNBC network has been keenly following the Martin shooting -- Politics Nation anchor Al Sharpton is even planning to host a protest rally tomorrow at a Baptist church in Sanford, Florida -- it appears the network has not yet aired Burnside's minute-and-a-half long story this morning. [see video after page break]

Burnside's report focused on the perspective of one Frank Taaffe, a neighbor and friend of George Zimmerman's. Taaffe noted that there had been eight burglaries in 15 months, most committed by young African-American males.