Dear Mr Bachan
You have every right to endorse any brand. It is perfectly legal and nothing should stop you.
Smoking cigarettes is perfectly legal. You cannot however deny that cigarettes are a cancerous idea. Your endorsement of Gujarat Tourism’s brand falls into this category. You did after all accept the offer at Mr Modi's invitation.
Corporate India will not be able to thank you enough. The corporate world has been looking for somebody who can help them move to Gujarat without having to be embarrassed or apologetic about dealing with Mr. Modi. You made it look like the right thing to do.
The timing is equally bad. Just as the law is catching up with Mr. Modi, you start making Mr.Modi look like a victim rather than the accused, You have the media batting for you as well. You managed to begin the process of changing the general perception about Mr. Modi. He, more than most, needs as much help as he can get in managing his image.
You have done nothing wrong as far as this episode is concerned. This is not about right or wrong. This is about the shades of grey between the two. That said, you will be judged by the company you keep. Some people will applaud you for keeping such company and some people will not approve (me). At the end of the day it is a choice that you will have to make. Whether you like it or not, choices that you make publicly do influence others.
I disagree not just with the choice but your vehement defence of the choice.