By popular demand here is the full confrontation! Floyd Mayweather and Shane Mosley get physical at the beginning of their NYC Press Conference in March to hype their May 1 Boxing bout. If you are wondering who shot for a takedown, that was actually an HBO executive who was trying to break them up, then tripped, causing more excitement than the fight itself.
You can check out the rest of the press conference from two weeks ago over here, since there was slightly more to it than just a near-brawl like Mayweather talking trash and Mosley looking flustered and confused. Also, Greedo shot first.