2. When lawyers do legal services, they can't distinguish between good people and bad people, just like drivers and passengers selling things in shopping malls and buses. It can be said that bad people don't sell things and bad people can't take buses.
Besides, even the bad guys have their own legitimate rights and interests. For example, lawyers should also safeguard the rights and interests of the parties, and the public security law cannot infringe on the rights and interests of the parties.
4. As a lawyer who protects the rights and interests of clients, you can't distinguish between good people and bad people, which is the requirement of lawyer's professional ethics.
Of course, there are also some lawyers who put money first, act without conscience and fight for the illegal interests of the bad guys. This is the scum of the legal profession.