Is it permissible for a Muslim not to attend the funeral of a person known for cruelty and brutality?

Following a funeral procession is a right a Muslim has over his Muslim brother and a communal obligation (fard kifa'i), and it carries immense virtue. However, the Prophet, peace and blessings be upon him, refrained from praying over the plunderer (ghāll) and the one who committed suicide, as a form of punishment and deterrence. Scholars have extended this principle to include, besides the Imam, other people of virtue, and to include those who are similar to or worse than the plunderer and the one who committed suicide, such as highway robbers and those who commit major sins and manifest transgressions, for the purpose of deterrence. Therefore, if a person was known for harshness and committing major sins, people of knowledge and virtue, whose abstention would have an impact in deterring these sins, should refrain from praying over him. As for the common people, they should follow the funeral procession and pray over it to attain the reward.