In the mission taking place in the city, I've found two women on paper that would get me an attaboy when attacked in slo-mo blade mode.
The first was a cardboard stand that turned into a cardboard stand of another woman when cut, for some reason. The second was a poster on a shop window, as pictured below. Cutting it in blade mode removed the tape.
Are these purely easter eggs, or is there some reward for cutting all the women?