Judges shouldn't fear being arrested, for some judges, that's what every single person that comes in front of them has been through. They should uphold the law, knowing that other judges will also uphold the law when it comes to them. They should put some trust in the system that they work with every single day, for decades sometimes, so they can fight for the rule of law over corruption, greed, and hate.
If judges aren't willing to stand up for the law, how can they expect any other legal professional to do so?