Hardcore fundamentalists and religious hindu zealots such as Pramod Muthalik have begun an organized and often compulsive drive to oppose Valentine's Day. The reason is that Valentine's Day is a bad western influence on the moral standing of the Indian society and thus must be banned. So Pramod Muthalik and his group called Sri Ram Sena (Army of Lord Ram - a Hindu God) has come to the forefront of spearheading the public repulsion of Western culture.
Underwear Protest (BBC): http://news.bbc.co.uk/2/hi/south_asia/7880377.stm
Ram Sena Cheif Arrested (IBN): http://ibnlive.in.com/news/ram-sena-chief-arrested-but-not-for-mangalore-pub-attack/83793-3.html
Summary of the Issue: http://www.newsflavor.com/Politics/World-Politics/Boycotting-Valentines-Day.525771