“So do men.” (in response to women needed to pay taxes on sanitary needs)
Katie Falls

I got something a little different from the aforementioned research than what Tim Fong stated. 
Using the CDC information (https://www.cdc.gov/ViolencePrevention/pdf/NISVS_Report2010-a.pdf) that was listed and actually reading what numbers were cited, you do indeed find in table 4.1 and 4.2 (pg. 48) that there are 5,356,000 male victims of physical violence (4.7% weighted) and 4,741,000 female victims of physical violence (4.0% weighted).

So the number presented by Katie (from my reading) are correct. There are more male victims of physical violence then female in respects to the past 12 month (which is generally regarded as a more reliable frame of reference as compared to the lifetime frame).

In Table 4.7 and 4.8 (Pg. 54) it also shows 4,322,000 (3.6% weighted) women were “slapped, pushed or shoved” while 5,066,000 (4.5% weighted) males were “slapped, pushed or shoved”.
 1,289,000 (1.1%) women were “hit with a fist or something hard”. 
 1,555,000 (1.4%) men were “hit with a fist or something hard”.
 373,000 (0.3%) women were “kicked”.
 737,000 (0.7%) men were “kicked”.

This actually works in hand with another CDC report which is also backed up by American Journal of Public Health (AJPH)(http://ajph.aphapublications.org/doi/abs/10.2105/AJPH.2005.079020) which was further cited by Psychiatric News (American Psychiatric Association) in their article “Men Shouldn’t Be Overlooked as Victims of Partner Violence” (http://psychnews.psychiatryonline.org/doi/full/10.1176%2Fpn.42.15.0031a).
These basically show that women are often the aggressor(s) especially when it comes down to non-reciprocal violence (violence that is only one way) to the tune of 70.7% perpetrated by women.

The results from the AJHP abstract are as follows:
Almost 24% of all relationships had some violence, and half (49.7%) of those were reciprocally violent. In non-reciprocally violent relationships, women were the perpetrators in more than 70% of the cases. Reciprocity was associated with more frequent violence among women (adjusted odds ratio [AOR]=2.3; 95% confidence interval [CI]=1.9, 2.8), but not men (AOR=1.26; 95% CI=0.9, 1.7). Regarding injury, men were more likely to inflict injury than were women (AOR=1.3; 95% CI=1.1, 1.5).

Another aspect that may tweak your brain comes to you from the NCJRS (National Criminal Justice Reference Service).
If you have troubles believing that women could be violent at all, then you would probably not like this report either especially if you believe that males are the more violent and abusive towards children. 
(Pg. 41) States “Approximately two-fifths (40.3%) of child victims were maltreated by their mothers acting alone”. There is a nice graph to go with this as well. 
It goes onto state that “another 19.1 percent were maltreated by their fathers acting alone
What I get from this is that a child is twice as likely to be abused by a single mother then a single father. 
“18.0 percent where abused by both their mother and father”

There are several more reports that basically show that women are not as gentile and innocent as they have been portrayed in the movies and media. 
Even the BBC is catching on that women do commit domestic violence (or violence period) (https://www.youtube.com/watch?v=dQpKruPOY7g)
ABC news (what would you do) even shows the stereotype and hypocrisy of attitudes towards women abusing men (https://www.youtube.com/watch?v=LlFAd4YdQks).

All in all, I would say that there is more then enough evidence out there to actually open up a real dialog and drop the pretenses that men are the only aggressive/violent ones.