TORONTO, ON - SEPTEMBER 08: Lady Gaga attends the 'Gaga: Five Foot Two' premiere during the 2017 Toronto International Film Festival at Princess of Wales Theatre on September 8, 2017 in Toronto, Canada. (Photo by J. Merritt/WireImage)

Celebrities Come For Donald Trump On Twitter After He Knocks San Juan Mayor

Another day, another string of tweets from President Donald Trump. This time, celebrities lent their voices to the fray to defend the subject of Trump's ire: San Juan Mayor Carmen Yulin Cruz. On Satur...