told to leave from facebook

so how do i? keep getting emails and cant find any tab to leave or delete.
i pride myself in being easy to get rid of, i am no cling on.
i have been working at this one world order for 6 yrs. now and first learned of it in the late 70's but who would listen then? no one.
i belong to many groups and mail box gets full many times. so no big deal here being asked to leave before i ever got started by some man in brimbed hat. no problem just send me instructions on how to delete my info and stop with the mail.
sincerely,
mountain19