It is NOT Anti-semitism to have allows that disallow shuls in basements. People who live in Suburbs do not want people congregating on a residential street and of course everyone drives and takes up all the parking spaces and sometimes even block driveways because they cant find parking and are late for shul (I once saw a guy block the whole street in front of a shul because he was late for minyan and couldnt find a parking space)
The law applies to all religions, not just jews