The rally condemning the attack is set for 7 p.m. Monday outside the restaurant in Baltimore County.
The video posted online shows a woman being beaten and then apparently having a seizure. Baltimore County police say a 14-year-old girl has been charged as a juvenile and an 18-year-old woman, Teonna Monae Brown, faces assault charges in the case.
The victim, 22-year-old Chrissy Lee Polis, says she's the victim of a hate crime. Polis says before she was attacked, one teen said Polis was a man using the women's restroom and accused Polis of talking to her man.