What is the tango street dance called in which men would use knives as props expressing masculine aggression in a graceful combat style? ?

The answer is Duelo Criollo

Explanation:

This system is made up of the use of traditional weapons. These are the facón, the dagger, the boleros and the spear called chuza, next to the poncho and the rebenque, comprising this combat system from its beginnings at the end of the 18th century until its evolution in these days, with a rich history that was present since the creation of the Argentine nation.