That passage from Isaiah 5:20 is a strong admonition to left-leaning Catholics who have joined the progressive clarion call to fight all kinds of what they consider to be "social injustices" that may not be unjust at all. The measure of what is good or evil, just or unjust is to be found in the Church's teaching traditions of the past two centuries, as opposed to popular fads that are spewing forth from dissident Catholic quarters.
Let's look at immigration, since these left-wing quarters, from the top down (that means you, USCCB) are having hissy fits about President Trump's ongoing efforts to expel foreign invaders. The left-wing, clergy included, refuse to acknowledge that our concerns lie not with those who immigrate in conformity with our applicable laws, but with those who flout our laws and sneak inside the US. They are, by definition, criminals. They are breaking US law that does comply with Catholic moral theology. In obfuscating that important distinction, they commit serious sins against the Eighth Commandment. I've written a bit on this topic over the years; here's a collection of it. So in this case, what's being called "evil" is the responsible regulating of immigration and what's being called "good" is the direct disobedience of immigration laws and being accessories to these crimes.
Let's move to another darling cause of the progressives - gun control. The left is all gung-ho on this bugaboo, not addressing the fact that criminals, by definition, disobey laws. The only ones impacted would be law-abiding citizens who desire to own firearms for the protection of themselves and their families. Whenever a shooting happens, immediately the left starts kveling about the need for firearm restriction - never the apprehension of criminals. Would that impinge too greatly on the Democratic voting base? Look at England. They've essentially outlawed guns, so what happens? Knife attacks arise - surprise! The "geniuses" governing England are now into (wait for it!) knife-control! Same thing in Red China!
Again, I've written a bit about that. See here. Please note that the top post explains why I believe that the USCCB's stance on gun control runs counter to Catholic moral theology. Once upon a time I believed that this was an area in which good people could disagree. I no longer hold onto that delusion. The right to adequate self defense is a moral good that no one may call evil, on pain of sin. A former pro-life leader, Rob Schenck, has glommed onto the erroneous push for arms banning, and in the process has allowed his thinking on basic pro-life issues to become corrupted. I'll have more to say on that later.
Let's move on to the death penalty or capital punishment. If gun control is an attack on the good of self-defense, the push to eliminate the death penalty is an attack on the good of civil government protecting its citizens from violent criminals. Again, the USCCB and their dutiful puppets are lock-step with their Soros-esque sugar-daddies in their shielding of criminals from the death penalty. Again, I've written much on that and won't rehash everything, but will elaborate on one major point. In the past, all the popes have upheld the legitimacy and the good of capital punishment. The most recent catechism from Pope John Paul II does the same. However, last year Pope Francis annnounced his intention to rewrite the catechism to say that the death penalty is inadmissable. I said it then, I'll say it now; THIS IS HERESY. Of course the USCCB intends to happily comply in promulgating this heresy. So now the good of capital punishment has been called evil, and this error has reached the proportions of full-blown heresy.
The USCCB, their obedient state-wide counterparts and the rest of their lapdogs are fully engaged in calling good "evil", and evil "good". They have jettisoned all authentic moral bearing for the favors of money, power, and worldly prestige. In so doing they have allowed their own thinking to become clouded, as have those who unthinkingly swallow the progressive bile simply because it comes from men wearing miters.
However, there have been pro-life leaders who, themselves succumbing to the siren calls of emotion-based leftwing sentiments, have allowed their pro-life beliefs to become weak and uncertain. In other words, by assuming progressive positions on immigration, gun control, etc, they have assumed progressive positions in pro-life matters as well. I have already mentioned Rob Schenck a few paragraphs back. He now supports the legalized murder of children. Another former pro-life leader, John Cavanaugh-O'Keefe, became so enamored of progressivism that he cast his vote for the rabidly pro-abortion Hillary Clinton in 2016. Both of these men clearly called evil "good".
Ladies and gentlemen, liberalism is harmful to the soul and can impede eternal salvation.