"I want people to realize that the domestic abuse charges happened in 1989. I didn't meet any of them until 1993"

Kato Kaelin is referring to the domestic abuse charges that were brought versus him in 1989. He is highlighting that he did not meet any of individuals involved in the charges till 1993, which was 4 years after the charges were brought against him. This suggests that he was not associated with the domestic abuse charges which he was not connected to the people involved in any way. Kaelin is most likely trying to clear his name and show his innocence by stressing the timeline of occasions. He desires individuals to understand that he was not involved in the domestic abuse charges which he did not meet any of individuals involved up until 4 years after the charges were brought versus him.