What do they gain by showing the naked body in the middle of the street? / ¿Que ganan mostrando el cuerpo desnudo a mitad de la calle?

I know that they are looking for more equality and opportunities, before a society that is not completely equitable, I agree and also want it but, write messages on their naked bodies and scream in the middle of the street, is that going to achieve something? I believe in free expression and in fact, right…