Too many words for the bumper sticker. How about
ENVIROS, SAVE THE EARTH...KILL YOURSELF
Just as ST. Paul was inspired to write in the book of Ephesians, that we war not or wrestle not against flesh and blood, but against some very powerful wicked, satanic, demonic entities behind the sceens who run this world.
However these people who run this world come to the decivedt, the gullible, posing as angels of light, beings who are enlightened to help them when in truth they are from the pit of hell.