It is Austin's most important and coolest festival: South by Southwest. But after two gun-related incidents at this year's SXSW, both involving volatile hip-hop crowds on March 18 and 20, the festival's organizers and Austin's liberal political leaders must be in a panic -- wondering how to get rid of all the thuggish hip-hop shows while maintaining their high-minded values of political correctness.   The mayhem at SXSW's music week together with other hip-hop thuggishness over the years -- including the deaths of four festivalgoers three years ago caused by a black rapper who was eluding police in a stolen car -- has stirred public outrage. The talk on social media and in online posts in recent days has veered into the politically incorrect, with many slamming hip-hop's thuggish culture. They worry that unsavory rappers and volatile hip-hoppers have hijacked large swaths of SXSW -- and are causing mayhem that now overshadows SXSW's trendy...(Read Full Article)