I am slightly disappointed by your article. As a media person, you have a responsibility to present a balanced view on things. I don't think you have done that.
You must not conclude that all Maharashtrians support the stand taken by the MNS sainiks.
Most of us realise that all the non-Maharashtrians who have come to Maharashtra do a lot of good work wherever they are.
But maybe you chose to ignore the view of the majority because it suits you and provides you with an oppurtunity to point out the various divisions in the Indian society and particularly the Maharashtrian society.
Most Maharashtrians respect the non-Maharashtrians because of who they are. If you convert to a Maratha, or any of the other Maharashtrian castes, then there is a good chance that this respect will diminish a little.
We respect people who are willing to fight for their rights and identity.
Hope you will find the strength to do what is right rather than do what is easy.
Also, the Shiv Sena has in the past raised the issue of illegal Bangladeshi immigrants and tried to send a few back to their country. The Mumbai police oficers were attacked in West Bengal. The Mumbai police didn't get any support at that time.