What is the ruling on some young people insulting, cursing, and classifying scholars like Ayed Al-Qarni and Amr Khaled, and how should one deal with them?

The two men mentioned are among those who invite people to Allah, and they have made good efforts in spreading the religion, and through them, Allah has benefited many people. We consider them to be among the righteous and good, knowing that infallibility is exclusive to prophets and messengers, and others' sayings can be accepted or rejected. Every Muslim must respect and revere scholars and refrain from insulting or slandering them.