Neglecting boys' and men's mental health is sexism. Thinking that they can go on in life without emotion and unstability is also sexism. Sexism is what makes boys and men avoid therapies. Many mental health professionals also dismiss men who are having emotional problems. The person who is sexist and who is affected by sexism, have no gender. So when someone's blaming sexism for gun violence, it might not be the only cause, because there are wealth gaps, patriarchy and many more factors in it, but definitely you shouldn't think they are blaiming boys and men only, for the sexism. The society's to blame, women are sexists too! She is blaimng the whole societal system which says boys that they are only valuable when they are providing and protecting women and children, that they should always stay competitive to be valued. So when the boys and men are not being able to keep up with that illogical standard, they think that they will kill a part of the people (women and children) who are supposed to be some man's responsibility and them die after that. Society (men and women) let men and women think that women and kids are not their own persons, but men's responsibility. Men who can't keep with the patriarchal standards are pitied, mocked. Girls and women are also taught that men are supposed to be the providers and protectors. That enables many of them mock and avoid men who are not busy to fit into these roles. That lead them to go for the taller and bigger guys even when they turns out to be abusive, manipulative and violent towards them. And in the social barter system of making men believe that they should be the providers and protecters, society forces women to serve men however they wish. So when women are not fitting into that box, they become ungrateful bitches in many men's eyes who deserve to be taught a lesson, even killed.