"Crisis can truly be an eye opener...you know who stand tall with you and realise those who don't...so much I have learnt today...(I) miss my dad, " Karan posted on his Twitter account. Karan's father and veteran film -maker Yash Johar died in 2004.
"My Name Is Khan" was dragged into a controversy when Shiv Sena protested actor Shah Rukh Khan, the main lead in the movie, for his comment on the inclusion of Pakistani players in the Indian Premier League (IPL).
The Shiv Sena has been vandalising theatres since Tuesday and has said that it will not allow the film to be released unless Shah Rukh apologises.
At present, Karan, Shah Rukh and Kajol, the lead actress of the film, are in Berlin attending the premiere of the film.