Police say they "can't arrest half-and-half scarf wearers" before Merseyside derby

Love them or hate them, you'll see half-and-half souvenir scarves everywhere before any game in the Premier League these days. But when it comes to the derby - any derby, half-and-half scarves are just wrong, aren't they?     

Merseyside Police responded to light-hearted requests from both Everton and Liverpool fans, explaining that they could not arrest anyone wearing a half-and-half scarf before this evening's derby at Anfield because it's not an offence... yet!