Before you start patting yourself on the back for your liberalism and/or atheism which supposedly means you're smarter than conservatives, consider the source.
Among the author's greatest hits are this:
Kanazawa's theories on race and intelligence are controversial. Kanazawa...has been accused of promoting "racist stereotypes".[13] In 2006 Kanazawa published a controversial paper suggesting that poor health of people in some nations is the result, not of poverty, but rather lower IQ.[14] In the British Journal of Health Psychology George T. H. Ellison wrote that the theory is based on flawed assumptions, questionable data, inappropriate analyses and biased interpretations. Ellison wrote that Kanazawa mistook statistical associations for evidence of causality and falsely concluded that populations in sub-Saharan Africa are less healthy because they are unintelligent and not because they are poor.[15]
and this:
(W)hile suicide missions are not always religiously motivated, when religion is involved, it is always Muslim. Why is this? Why is Islam the only religion that motivates its followers to commit suicide missions?...It is the combination of polygyny and the promise of a large harem of virgins in heaven that motivates many young Muslim men to commit suicide bombings.
and this:
Why must sexual harassment be a necessary consequence of the sexual integration of the workplace?...
Abuse, intimidation, and degradation are all part of men's repertoire of tactics employed in competitive situations. In other words, men are not treating women differently from men—the definition of discrimination, under which sexual harassment legally falls—but the opposite: Men harass women precisely because they are not discriminating between men and women.
and this:
Both World War I and World War II lasted for four years. We fought vast empires with organized armies and navies with tanks, airplanes, and submarines, yet it took us only four years to defeat them. Now we are in the middle of...a global clash of civilizations...
Compared to our enemies, we have much more money, much more technologically advanced weapons and machinery, and better organized and trained armies (although far fewer actual combatants). Why isn’t this a slam dunk?
...(T)here is one resource that our enemies have in abundance but we don’t: hate.... we appear to have PC’ed hatred out of our lexicon and emotional repertoire....
This has never been the case in our previous wars... (W)e didn’t think twice about dropping bombs on them, to kill them and their wives and children...
Here’s a little thought experiment. Imagine that, on September 11, 2001, when the Twin Towers came down, the President of the United States was not George W. Bush, but Ann Coulter. What would have happened then? On September 12, President Coulter would have ordered the US military forces to drop 35 nuclear bombs throughout the Middle East, killing all of our actual and potential enemy combatants, and their wives and children. On September 13, the war would have been over and won, without a single American life lost.
Yes, we need a woman in the White House, but not the one who’s running.
In short, Kanazawa is a wingnut, a seeker of attention through highly inflammatory claims, and not least, a purveyor of bad science.
His argument in his latest paper (here - subscription only) comes down to saying that conservatism is the base state of humanity and that liberalism (which he defines as the ability to value unknown others equally with family members) and atheism are adaptations that go against the broad evolutionary forces that have shaped us, and that higher intelligence is what has allowed some humans to go against the stream and prosper evolutionarily.
I'll leave it to others to criticize his science, which from most accounts is both shoddy and tendentious.
All I'll say is be very wary and don't let yourself be hooked by vanity. There's a very obvious poison pill buried in his argument in terms of the culture wars.