How is that a pro-OurLanguage protest? The board already had Kannada and English. In addition, Hindi was being added. That is clearly an anti-Hindi protest. Not a pro-Kannada protest.
I will take your comment seriously when Kannada shows up on Delhi metro signage and no body protests, until then its shoving things down peoples throat and holding them responsible for not swallowing up.
Also, as long as there is English, its totally useless to learn Hindi.