International mother language day

Today is the International mother language day. I'm sure a lot of people will not get to figure this out as Google didn't change its banner :)

I was chatting with a British friend and we were discussing that the relevance of mother language is not so much apparent to most natively English speaking people because of its predominance. However, on this day in 1952 people in Bangladesh laid down their lives while demanding the right to use their own mother language (which incidentally is also my mother language).