Appointing Bollywood actor Salman Khan as a goodwill ambassador for the 2016 Rio Olympics for the indian contingent is a regressive move and reflects negatively on India for the below reasons:

Salman Khan is a serial Woman Hater/abuser, he is known to have abused many women in the last 25 years, more on this Here and Here and Here

Salman Khan is a Animal Hunter and threat to endangered species, More on this Here and Here

Salman is a threat to society and human life, He has cold bloodedly killed innocent people sleeping on the street, more on this Here and Here and Here

Salman Khan has openly supported wanted terrorists, More on this Here and Here.