Dear indiman whatever reason for your hate towards North Indian(Aryan),Ram Setu is not private property of tamilians alone neither is shiva.If you can come out of bias that is ,you can check the family deity of many of our Indian ,the North,west,east,centeral most of our kul devata is shiva and most of the holy places are also assosiated with him,ecept mATHURA,aYODHYA,dwARKA And Puri all other places of worship are related to shiva,From Amarnath,kedarnath to Rameshwar.So what is your point that your ever you refer as north indian hindus should stop worshiping Him,just to statisfy dravidian beleiving people like you?
Do tamilians call their God as Asuras?NO it is the Iranians who refer their God as ASURA and Devas special INDRA as demon.Susquetally all Iranian Kings have taken the Title of ASUras and Indians as Dev,hence Krishnadevaraya(even though you want to beleive that dravidian kings were haters of RAm and KRishna(for what ever reasons).
