I've only skimmed the Wikipedia article, but how about this?
Try not skimming but reading. For example, to quote from your own link: "There was a long-standing 15 point or 1 SD difference between the intelligence test scores of African Americans and White Americans, though it might have narrowed slightly in the then recent years. The difference was largest on those tests, verbal or non-verbal, that best represented the general intelligence factor (g). Controlled studies of the way the tests were formulated and administered had shown that this did not contribute substantially to the difference. Attempts to devise tests that would minimize disadvantages of this kind had been unsuccessful."
I (we?) would have to think long and hard
It's never too early to start thinking long and hard.
there should be a debate on whether the general public should be trusted with this truth
Oh, boy. And who would you like to place in charge of deciding what general public can be "trusted with" and what it cannot?
It's a lot of stuff and I have a lot of work and a limited amount of energy which I would rather not spend debating something that I anticipate to be false. It can definitely be too early to think long and hard, but if you want to save time, you could unbury what the rulers and intellectuals of the eras in which racism was the paradigm, and analyze them from an ethical point of view. I'll be waiting.
I dunno about the placing-in-charge part, but I would assume it would be "whoever finds out first". Remember the matter with publicizing research on ...
Now, it is said we all here pride ourselves on our intelligence, rationality, and moral sense. It is also said, however, that we are a fiercely independent bunch, and that we can let this pride of ours get the better of us. There have also been comments that the live communities that appear at meetups provide much more positive interactions than what goes on on this site's discussions; this might merit further investigation.
My point is; we've done a lot of research on how to do proper ethical and metaethical calculations, and on how to achieve self-empowerment and deal with our own akrasia, which is awesome. We've also done some work on matters of gender equality, which is very positive as well. But I haven't seen us do anything about the basic details of human interaction, what one would call "politeness" and "basic human decency". And I think it might be useful if we started tackling these, for our own sakes, that of those who surround us, and that of easing our mission along, which is, as I understand it so far, to save the world (from existential risk (at the hands of (unfriendly and self-modifying) artificial intelligence))).
What inspired me to propose this post was a video I just saw from Hank Green of the famed and fabled vlogbrothers. I hold these two individuals in very high esteem, and I would expect many here to share my feelings about them, on account of their values and sensibilities largely overlapping with ours; namely the sense that intelligence, knowledge and curiosity are awesome, and that intellectuals ought to use their power to help improve themselves and the world around them.
Here it is; I hope you enjoy it