An Instagram post by world champion Gabriel Medina complaining about a judge’s decision sparks an online stoush among some of the world’s best surfers, leading to a wave of abuse and threats towards his Brazilian compatriot Caio Ibelli.

An Instagram post by world champion Gabriel Medina complaining about a judge’s decision sparks an online stoush among some of the world’s best surfers, leading to a wave of abuse and threats towards his Brazilian compatriot Caio Ibelli.