OK, so it seems you have two objections. First that the headline omits the fact that that the period involved is not annual, thus optically inflating the figure. Second, you object that the phrase "sexually assaulted" is used instead of the more accurate and neutral phrase "arrested for sex-related crimes".
I have to say I agree with you on both counts. It would have been more accurate and neutral to write the headline as you suggest. (It would also have been longer and more boring.) Regarding your second point, a quick google search reveals that sex-related crimes encompass:
- Sexual Assault: Describes the catch-all crime that encompasses unwanted sexual touching of many kinds, with links to state penal code and federal law on related crimes.
- Solicitation: It's illegal to entice someone else to commit a crime (such as prostitution). ...
- Statutory Rape
I have no idea how the figures break down in these categories, so it's hard to the degree of unfairness being applied. If all of the 70K cases were rape, then Breitbart may actually be overly nice :) (Not saying it's likely!)
So thanks for that clarification. I would say, however, that this kind of headline is pretty typical for all news agencies. For example, during the Brexit "debate" in Britain, news outlets like BBC also quoted figures that were aggregated over a number of years to highlight the potential losses to the UK economy. Ditto the Daily Mail on the other side of the aisle. If this is the evidence that Breitbart is a shoddy news outlet, then I contend that the evidence is fairly weak.