1946 and 1964 was before Bangladesh....don't want to get in there. Riot was everywhere in 1946....can't say who started it...but I do condemn violence.https://en.m.wikipedia.org/wiki/1964_East_Pakistan_riots
https://en.m.wikipedia.org/wiki/2013_Bangladesh_anti-Hindu_violence
https://en.m.wikipedia.org/wiki/Noakhali_riots
https://en.m.wikipedia.org/wiki/2014_Bangladesh_anti-Hindu_violence
https://en.m.wikipedia.org/wiki/2012_Ramu_violence
Do have a look.
About the rest......number of causality is 0...from those three. While the violence is to be condemned, we all should be happy that at least no one died. Also the govt took action against the perpetrators. Many were arrested following the incidents. Gov't even took measures to ban Jamaat...there were protests nationwide condemning these attacks.
Can we say the same about India? Where mob lynching is seen as a delightful event.
Look, your agenda is clear from your post and I don't think I have to explain these things to you...but still, listen. We Bangladeshis are not a hateful or intolerant bunch. I do think for various reasons some had to migrate from Bangladesh. You have to understand for most part of our history we had been a very poor country. Many people thought it would be better for them in India. Of course there has been some incidents of violence as well...but the action of a few doesn't represent the nation. If you have a chance, do visit Bangladesh and I promise you will be surprised by the warm welcome you will get. Traffic jams and condition of roads might bother you...but the interaction with people will mostly be positive.