“Coexist” - brought to you by CAIR.
Islam encourages the facade of the “friendly Muslim” when their numbers are such that they can’t force Sharia on the rest of society.
On a related note, if you happen to see someone coming or going from a car with this sticker on it, make a show of staring at it and say “well I’ll be... I never saw the hidden message between the letters before” and walk away.