Re: A disappointing Dr Zakir Naik
The second video is gone so I can't really comment.
Now I have great respect for Ali {raz}, but he was wrong when he didn't prosecute the killers of the third caliph. I think those people were in his army so maybe he needed them to prolong his rule. Anyway, whatever his reason for not prosecuting the killers, be it that he didn't want more bloodshed or he wanted to be khalifah at last, he did set a bad example for future muslims. Of course, muawiyah and co. prolly also used this to further their own political goals.
PS Disclaimer: None of the sahabas claimed that they were perfect and many used to cry in the night asking for God's forgiveness. I like this humbleness but we should be able to judge the actions of people without getting all emotional.