Why no one did oppose of Mika Singh over his comment on Diana Panty?

It looks like that Bollywood do discrimination in between star actors and normal actors. That's why when anybody say something against any big actor so Bollywood start criticizing them but when some big star and any renowned person make fun of new comer or new actor that time no one says opposite anyone. Recently the case is for Daina Panty whose Mika Singh did insult in front of everyone but everyone went silent on it. Diana Panty made debut in Bollywood from film Cocktail alongside Saif Ali Khan and Deepika Padukone. The film was released in 2012 and now Diana is making comeback with upcoming movie Happy Bhaag Jayegi. In this Jimmy Shergill, Ali Fazal and Abhay Deol are playing leads opposite her. Recently the team released its first song Gabru Ready To Mingle which Mika himself has sung. During the launch of song everyone including director and music composer were presented at the event. Here Mika in the fun and made fun of Diana Panty's surname and said Diana Panty and Mika Kachcha. Diana felt very anger on it but she didn't said anything over it. According to a report Diana's close person said, That time Diana was feeling very bad but she didn't say anything and keep everything in her mind. But the question raise is media was also presented there with some other people but besides no one opposed Mika Singh even on social media people didn't spoke any word on him. Few days ago when AIB member Tanmay Bhatt made fun of Lata Mangeshkar and Sachin Tendulkar so people started criticizing him and said it was a bad humor then now what about Mika Singh. This is not the first time when Mika has insulted someone. You may also like :- Happy Bhaag Jayegi Trailer Model registered case against Mika Singh