Officers are sometimes killed during traffic stops, but statistically speaking, the odds of that actually happening are low. Traffic stops are far and away the most common point of contact between people and the law.
If you find a dimension intereseting, we recommend you pick up one or two facts that you find intriguing and place them into your memory. That way you will have 2nd degree information about the topic if it comes up in conversation.
Accordingly, you can do the same with others as well.