I expect it's because of the rating and the tags you put on the piece. People look for art of specific things, regardless of subject or fandom, and violence, blood, and suicide are definitely some of those things.
I'm not sure that the piece really required that rating or those tags, especially the "Graphic Depictions of Violence" warning. While you do have him holding the knife in his gut, I don't know that it'd be considered "graphic". This film doesn't sound like one that would get an R or higher rating, so if that's all they showed on-screen (single stab, blood on the clothing), I'd think your art doesn't need an M rating or a warning.
On the other hand, that might be an American attitude - movies here with tons of people getting slaughtered bloodily gets an R rating, but show a little bit of upper thigh skin and that's definitely R, and any more gets NC-17. :P
no subject
I'm not sure that the piece really required that rating or those tags, especially the "Graphic Depictions of Violence" warning. While you do have him holding the knife in his gut, I don't know that it'd be considered "graphic". This film doesn't sound like one that would get an R or higher rating, so if that's all they showed on-screen (single stab, blood on the clothing), I'd think your art doesn't need an M rating or a warning.
On the other hand, that might be an American attitude - movies here with tons of people getting slaughtered bloodily gets an R rating, but show a little bit of upper thigh skin and that's definitely R, and any more gets NC-17. :P