Arsenal fans were furious with Mike Dean after the referee awarded West Brom a late penalty in the Gunners' draw against West Brom at the Hawthorns.
Alexis Sanchez had appeared to be sending Arsenal on their way to three points when his deflected free-kick nestled in the back of Ben Foster's net.
But five minutes later it was 1-1 as Dean penalised Calum Chambers for a handball inside the area.
It was an incredibly harsh decision on the Gunners defender who was stood just a yard from Kieran Gibbs as the Baggies full-back attempted to cross.
It did strike Chambers' hand, but it was in a low, natural position - and Gooners did not waste any time in laying into Dean on social media... led by celebrity fan Piers Morgan.