Generally speaking, the bad people say are people who are morally corrupt and do bad things, but this word is not a legal word. Legally, there are only those who break the law and those who abide by the law. When a "bad guy" needs a lawyer to defend him, it means that the "bad guy" has been suspected of committing a crime, that is, he is a criminal.
On the one hand, from a secular point of view, criminals may be bad, such as thieves, murderers who illegally steal other people's property and invade other people's lives. But it doesn't mean that everything he owns is bad, and he can't be deprived of the right to receive defense just because he is not good in one aspect.
Second, let's look at the lawyer's defense. What is this?
Lawyer's defense is only to measure one or several specific behaviors of "bad guys" who violate the law, and to prove from a legal point of view that everything of them should be punished, not aggravated but mitigated. Even in accordance with the law should not be punished and so on.
Through the lawyer's defense, the criminal behavior of the "bad guy" is legally analyzed and characterized to protect the legitimate rights and interests of this "bad guy".
Legally speaking, everyone has the right to be protected by law. It is a basic right to be defended by a lawyer when suspected of committing a crime. Therefore, even those who have become social villains still enjoy the right to be defended by lawyers.
One of the important duties of a lawyer is to provide legal help and defense for people who are not suspected of committing crimes, and to perform their duties according to law, instead of protecting this "bad guy" without principle.
Therefore, it is not difficult to see why people should defend themselves. This is within the scope of lawyers' duties, and it cannot be said that lawyers are not good.