Which sport is also called murderball and why?

Due to its aggressive and full-contact character, wheelchair rugby was originally called murderball. 28 Jul 2014
Allianz - Fact of the week - Murderball

Wheelchair rugby was developed in Canada in the 1970’s by athletes with quadriplegia, and after being presented as a demonstration sport at the Atlanta 1996 Paralympic Games, it made its debut as a medal sport at the Sydney 2000 Paralympic Games.

The sport is now practiced in more than 25 different countries and includes men and women on the same teams.

Two teams of at least four players each compete for four periods of eight minutes each.