Here is how I think OJ did it
OJ killed Nicole and Ron by accident. He didn't mean to do it. He went to Nicole's to confront her then he told her he didn't want her bringing other home to screw around their children. Nicole told him Go *beep* himself. He lost it and hit her. Ron was trying to defend Nicole and he ended up getting killed too. OJ just didn't know his own strength and Nicole is a little thing. He panicked. Hence, the Great White Bronco chase. He was scared of losing everything and his kids so he pleaded Not Guilty.
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