That's a strange position to pivot off of - there's no normative claim in that entire passage, just an analytical deconstruction of a societal manifestation.
Maybe times have changed, but this is excusing and not at all accurately characterizing the people I saw looting Nike, Best Buy, and Walmart. It was naked theft under the cover of "equity." I want to know whether MLK was principled, or a politician making excuses. I'll do more research.
This sentence is particularly egregious.
To see MLK just come straight out and say black people don't target institutions because they don't care about changing them kind of defeats any legitimate argument for rioting.
The problem with the MLK quote is that he is just confirming what every racist white person thinks, institutional racism isn't a thing black people just want free shit and are willing to resort to violence to get it.
Looting another citizen is much harder to justify the legitimacy of, disguising looting as rioting makes it easier to do so.