Oh my God one of these threads came up and I remembered an example easily!
Sue, that T-rex that was one of the most complete? Its discovery set off a shitstorm of legal arguments. Eventually the guy who found it was sent to jail. Ya, there's a reason I don't care for paleontology anymore...
Eris, the dwarf planet, was named after the Goddess of Chaos from Roman mythology(or Greek, can't remember but I'm guessing Roman due to pattern recognition). Its discovery caused scientists to declare Pluto is no longer a planet, which caused a lot of chaos.