VIDEO: Lionel Messi loses his cool with violent headbutt and throat-grab during Roma friendly

Lionel Messi showed the world his aggressive side in a friendly for Barcelona against Roma at the Camp Nou.

When 1-0 ahead, the Argentina captain reacted angrily to something said by Roma defender Mapou Yanga-Mbiwa and appeared to headbutt him before reaching for the former Newcastle player’s throat.