They went after the J-6ers because there was not enough public sentiment to support them. All of the Left despised them and most of the right were willing to believe what was being reported about them. So, they roughed them up because no one was found to defend them. Precedents were established, however, that now can be weaponized against others that some may support. Many of those, however, are also supporters of law and order and will say, "Well, they did technically violate the law, so I guess they got what they had coming to them," even though the law was only recently minted and being applied for the first time on their neighbor. We saw this during COVID. Neighbors turned into narcs a lot faster than you would have thought possibly. An entire country became karens and the rest of us were on their nanny cams.
Principles do not accommodate personal preferences. If they do, they are not principles, they are merely prejudices. Principles help you pre-judge by keeping a certain standard. Prejudices make it impossible for outside standards, like principles, to be held. I do not want the Left arrested for hate crimes anymore than I want a Christian to be arrested for them. I say this because I believe that hate crimes are, in principle, unjust. Murdering someone because of their color of skin is no worse a crime than murdering someone because of their political affiliation. They should be illegal for the same reason and punished the same way. Bad precedents often get pushed through by being used on bad people. Because they are bad by our standards, they deserve to have bad things by any standard happen to them. But that smuggles in bad precedent and anything you are willing to introduce can be used by your enemies against you.
In short, if you do not oppose evil in principle, you are merely tolerating it until it comes for you.
First they came for the Communists
And I did not speak out
Because I was not a Communist
Then they came for the Socialists
And I did not speak out
Because I was not a Socialist
Then they came for the trade unionists
And I did not speak out
Because I was not a trade unionist
Then they came for the Jews
And I did not speak out
Because I was not a Jew
Then they came for me
And there was no one left
To speak out for me
— Martin Niemöller
If you allow unjust things to happen to others because you don't identify with them, soon enough the authorities will identify you as someone that unjust things should be done to, and there will be no one left to come to your aid.