Mars square Pluto (orb 1.9°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Mars in Leo in House 11 brings action, courage, competition, and effort into House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects), with Leo style (presence, pride, creation, and the wish to be seen); Pluto in Taurus in House 8 brings crisis, power, survival, and regeneration into House 8 (sexuality, shared power, crisis, and invisible bonds), with Taurus style (nature, good food, physical sensuality, roots, resources, and perseverance).
Concrete friction: this aspect creates friction between Mars (action, courage, competition, and effort) and Pluto's crisis instinct: pressure can become domination, fear, or destructive escalation unless it receives a clear outlet. House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects) is in friction with House 8 (sexuality, shared power, crisis, and invisible bonds); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.