Ismail, why you are worried about RSS? the Trouser is a uniform similar to the one we wear in schools for SCouts. nothing wrong in it.
RSS is not converting Muslims into HINDUS. neither they are into promoting terrorism, helping ISI or other spy agents to destroy INDIA.
you should only object if RSS try to do any of the above, or try to spread hatred among the INDIANs in the name of religion.
Neither Hinduism nor RSS says that it is the only way to worship God and it is the only true path. in Bhagwat Gita Sree krishna says : in whichever way you worship me, in whichever from you worship me " and even if you dont believe in me and dont worship me, you are part of me.
So if something happening for the progress of a community and progress of a nation. let them do it.