MSNBC Live 05/09/16

Clinton refuses to engage Trump's negativity

Democratic presidential candidate Hillary Clinton told MSNBC's Andrea Mitchell that Donald Trump can run a campaign however he chooses - but she's not planning to give his attacks the time of day. NBC's Chris Jansing, Ari Melber, Katy Tur and republican strategist Susan Del Percio join Chris Hayes to discuss. ... more Duration: {{video.duration.momentjs}}