Cosmic Yak
Philosopher
You really need to learn about Bayesian reasoning.
You had a lot more than zero information about the prior probability of the person in that news story being an illegal immigrant.
A lot more? I disagree. What we had was a) he's Mexican, and b) unnamed sources from a source known for its unreliability and extreme bias, saying he was an illegal. Unless you assume that all Hispanics in America are illegals, I don't see this as anything more than a guess. Anything more is surely just motivated by personal bias.