This is true, and it makes things easier for Trump due to precedent. Remember how much the private prison stocks went up on election night? Right now we have an avowed racist with a history as AG. With established camps and private prisons at his disposal, a compromised Executive with Nazi (Alt-Right) counselors, the possibility, alas is there. Remember, Trump admires Putin as does the Neo-Nazi's, and one strategy Putin uses is to jail his enemies and critics. See Magnitsky.
So currently, we have an increase in immigrants and refugees being detained, Gitmo still open and profiteers happy to build more detention centers. So the question of 'Is Trump weakening the Rule of Law as it applies to Neo-Nazi's?' If they happily detain the venerable and let the domestic terrorists go and won't call them out like they should. I would say, yes.