1. Men are more likely to face consequences (both in a legal and non-legal sense) for violence they commit.

  2. Violence matters less when it happens to a man than it does when it happens to a woman (as is seen in differing legal punishments for crimes against victims of different genders, and in simply how much society talks about violence against men vs women).

  3. Men are far more likely to be victims of violence (whether they know the perpetrator or not). This trend starts very early in life so, NO, it's not men's fault that they face more violence.

  4. It is undoubtedly more socially acceptable to be violent to a man and the public may simply not even care about some violence towards men.

  5. ALL men are so heavily stigmatized as violent, and polite society and the establishment largely encourages this sexism (even many traditionalists/conservatives encourage this). Honestly it feels a bit like what I've read of the stigmatization of black men as violent in the reconstruction era American South (I make that comparison because that was largely encouraged by the establishment as well).

  6. Men are less likely than women to receive compassion when they speak about violence they faced (particularly if that violence was at the hands of a woman - I know women who proudly laugh at men getting physically hurt by women).

  7. The numbers of reported male victims of sexual violence and domestic violence are far far closer to the numbers of female victims than most people seem to assume. The huge difference, however, is that men are conditioned to be less likely to report or complain about violence they faced. A man who complains about that is seen as less of a man - a woman who complains about that does not have her identity lessened. Who knows just what % of victims of SA and DV are male (almost definitely A LOT more than is reported). Nevertheless, when people talk about DV and SA, it's almost always in a frame of "man bad, woman good".

Those points are just off the top of my head. This list is already long enough.