as much as I don't like these retards, the hand sign is "Hang Loose" not the devil horns. (although their intent inside their subconscious can't be verified they may in fact symbolicly replace hang loose with demon horns while keep goin with the smile.)
Anyway, they have cover for that hand sign if it's Hawaiian related event.
Hang loose is a very friendly sign. Perhaps it's a dual use "tool" to LURE victims by A-TYPE psychopaths.