Is there any sexual content?

an implied rape that isnt shown.
may i ask why you're inquiring?

There is no sexual content, but you might want to ask him to close his eyes during the more violent scenes(there are quite a few)

Nascimiento practises judo with his son in one scene. The scene has

A) a slightly homoerotic touch to it.

But it's just father and son wrestling a little - totally "innocent" for that matter. Or maybe it's just because his son is really cute and he's constantly moaning...

B) a wonderful approach on showing the relationship sports can help create between men.

I think between all the pretty realistic violence shown in this movie (REALISTIC so much that it hurts - thus it's NOT FOR CHILDREN!) this is the scene in which we learn something about the good nature of Nascimiento as he isn't afraid of body contact with his (adolescent) son as they fight in a very fair manner, practising holds and such, without hurting each other.

We shouldn't forget that a lack of body contact means torture for every human being and especially for a young one. In this place, violence is as common as everywhere else on our planet and it is shown how close it is related with tenderness as that it's all just a matter of how much force you apply and what goals you pursue with it.

All in all a wonderful film from a country whose inhabitants have to deal with problems we desperately try not to look at because we fear that if we did they would become real for us as well.

I truly hope it won't become real for all of us but at the moment we are going in the wrong direction. And we have been going into this direction for a very long time...I hope it's not too late. For our children there must be more than hope; there must be a way we can show them or our generation will be just another jar of worms.

A little bit of sexual content but don't worry about the extreme violence and drugs and corruption that reflect life for some Brazilians.

I know I'm two years late with this reply, but to others who might have the same question: this is not a movie that kids will 'get'. Half of it will just go over their heads.
You can watch Terminator with your kid/younger brother/whatever, but this movie is not just very violent (though slightly less than the first one), but is also very political and contains lots of social commentary. A young person who still doesn't understand what sex is will definitely be even more puzzled by the constant talk about corruption, politics, 'the system' etc.

well there are these ugly old dudes that make out with young girls on a boat in the middle of the movie which is truly disgusting .