I agree with that a lot more. As Sherlock Holmes once said: "It is a capital mistake to theorize before one has data."
But I don't think that it's the best approach to equate one person's personal experience with data. Otherwise we are just analysing anecdotes.
What irked me the most was saying people who have experience and pairing it with a negative label of the police such as "criminals wearing badges". It kind of destroys the whole idea of keeping bias out of the analysis.