What about the Greek flag? Is has a cross on it.
If you have Ap*llo, Mithr*s Osir*s, or any of the lookalikes on a flag it would be an issue. If people begin worshipping crosses, we will have problems. For now it’s like their little fish thing, just means they worship what they do it’s not Hashem to them. You could even have a pic of poop on a Baal Pe*r flag and even if it’s how they worship their man-made rock, or it represents those that do, it’s not technically idolatry.
My question is if someone worships water, they make a flag with water, and it gets dropped into a pile of water polo water flags, are they all in doubt?