The media covers violence against men when it fits an aspect of their agenda, such as "racism" or anti-gun activism. Other than that, though, it's a very good point.
A special concern about violence against women and girls would be based on the fact that healthy (and alive) women are necessary for the survival of the human species. However, our "cultural elites" now oppose the survival of the human species, which creates disarray in their "reasoning."
90% of those incarcerated are male. This is a much, much greater disproportion to their percentage of the population than the black/white disproportion so often cited as proof of racist law enforcement.
But everybody is able to recognize that the reason more males are in the slammer is because they commit more and more violent crimes than women. This is also of course the reason more blacks, proportionately, are in prison, but people seem to find it a lot more difficult to admit it.