How should one respond to the emergence of some of the Salaf against the rulers?

Question : Thank you. Yes.

Answer : How is the answer to this? The answer is that these people exercise independent legal reasoning (ijtihad), and they err and they hit the mark. This is the answer. We have evidence from the Qur'an and the Sunnah that is established and firm, as well as independent legal reasoning (ijtihad). The Khawarij were initially with 'Ali ibn Abi Talib and went out with him to fight the people of Sham. When the arbitration took place, they turned against him and declared 'Umar ibn al-Khattab and everyone with him to be disbelievers. These are anomalous opinions. Yes. I have nothing else.
By Allah, my brothers, I say: Beware, beware of fitnah (trial, discord or temptation). The countries, praise be to Allah, are safe and secure. Everyone wishes to live in them, even the countries that do not have turmoil wish to live in these lands. Preserve the blessing. I fear that if an incident occurs, God forbid, that evil will result from what is good. You must be gentle, you must reflect, you must contemplate, and you must consider the things: what is the outcome of this issue? It results in much evil. And no one can confront a state with twenty people, or a hundred, or two hundred. So you must take these matters into consideration. And the sensible believer does not proceed with anything except under two conditions: first, that he sees it is better than the current situation, and second, that it does not lead to a greater harm. We do not doubt that we are all falling short, both rulers and the ruled, but to Allah we complain.