I had to do an essay on this subject, my teacher picked it out for me, as a joke, and so i did it.
As far as my 'research' went (got it from the net) the avarage black men is 0.2 cm wider then the avarage white men, asians have smaller penises because asian woman are thighter and smaller then lets say whites and black woman.
But all of this is nonsense, just like in animals there are variations, for example ants.
Avarage ant is strong, red ants can sting, green ands kill and attack everything they see.
Going by that standard, Asians are smaller, more wit, Black people are better at sports (cause they were the real hunters, africa ofcourse is way more dangerous then europe, and thats why black men also have bigger and stronger bones) and white people are in between i think, i dont really know what the 'perk' of being white was.
In any case, its not offensive at all, and it shouldnt be picked up as an offensive subject.
Black people are black cause in africa, you get exposed to the sun so many times more then in europe, thats why they have darker skin, if you go by the stereotype that black men are bigger then whites (in their southern parts) its cause black woman have bigger hips and all, asians are smaller in body length, and also penis size cause asian woman are tiny and petite and tight, it wouldnt make sense if it wasnt like this, but cause of the media, and music and porn, its a shame to admit that you have a small penis, you dont want to get looked down upon and feel embarrased.
Cause most people ( as i, to be honest) think bigger penises are better then small ones, it doesnt have to be true, but its just cause of that fact, people are insecure about their sizes id say around 80% of the people have that opinion.
The most logical way to see or guess a man is well endowed is looking at their shoes, ask most people on here if they claim to have a big penis, their shoe size and ill tell you most of them will say 12+
I just felt like sharing this little bunch of bs because i know some asian people really are offended by it, and they shouldnt be, its perfectly logical to be smaller if you are ' the smaller race'