Spot on. The left has been trained to dispense with critical thinking and moral absolutes and instead based their thinking on moral relativity and "the ends justify they means" type thinking. So, for example, they can see 3,000 dead on 9/11 and say "it's tragic BUT.... if we hadn't blah blah blah". These people would look at this graphic and say "It's terrible that so many had to die BUT if they hadn't owned guns it would have never happened."
It's why the leftists worry me. Underneath their faux persona of "compassion" and "fairness" they are totalitarians who merely lack the power to crush our necks under their boots in the name of whatever "greater good" they come up with. But they are slowly taking that power while the right stands by without a champion wiling to challenge them. I fear it may just be a matter of time.
As a demonstration of the mindset, consider pulitzer prize winning reporter Walter Duranty, who witnessed first hand the forced starvation of millions in the Ukraine but covered it up and instead run stories of a Soviet utopia moving forward mightily with prosperity for all. When confronted with the reality of the horrible conditions he would acknowledge things might be bad but would deny the truth he himself witnessed about purges and forced famines. He'd just say "you have to break some eggs to make an omelet." In other words, starving millions is okay if it enables the state to meet their five year plan. This is the left.