Melissa McCarthy Defends Meghan Markle, Claims Smart Women Threaten People

Melissa McCarthy's defending her royal homie ... calling out trolls who hate on Meghan Markle -- and saying it's 'cause people feel threatened by successful women. The actress spoke with Page Six earlier this week in a new video posted Sunday ... and, she stood up for her pal -- saying she gets so much hate for seemingly no reason. McCarthy then adds she feels intelligent women who have lives are consistently…