The 21-year-old girl was allegedly beaten up and stripped by the mob after a woman was mowed down by a car in the city.
Hrithik tweeted, "Injustice like this shames the entire human race. The ones who did wrong must be made to understand and repent!"
"No apology is enough for the horror this girl from Tanzania was made to suffer!! Shameful..!" posted Farhan Akhtar.
Director Punit Malhotra wrote, "What happened with the Tanzanian student is just sad, shameful & disgusting. I wish nothing short of capital punishment for the culprits."
Sonakshi posted, "What is wrong with people? What happened in bengaluru was sickening to say the least. I hope everyone who did that to the girl pays. Karma."
Producer Ritesh Sidhwani tweeted, "Shocked disappointed & depressed on hearing about the #Bengaluru incident... The police standing there watching. Indian Govt Wake Up.