No, the suppression by and large is in that people are shunned for presenting unfavorable suppositions. In turn, those suppositions cannot be explored because people fear they'll be made out to be, in this particular case, racists.

You clearly don't understand what "casual" means then. How much melanin your body produces doesn't affect your intelligence and no one has claimed otherwise. If you think people are claiming that or that list claims that, then you're putting words in people's mouth.

"That tar pit of links is beneath you." This is the exact mentality I'm talking about. Suppositions about the various races are shunned.

You don't like the science you're reading because you have an ideological bias that dictates what you're allowed to say.

There are IQ differences among the races. If you have trouble accepting that, then it's because you've put ideology before science.