As a caucasian male, Narcos has made me want to visit Mexico and Colombia and eat yummy food. Reading the New York Times has made me scared of visiting Mexico. Colombia seems okay though.
I'd say it's one of the safer mayor citiew I've been, given that you stay in the touristy parts. Centro histórico, La Condesa, Roma, Polanco and similar. Worst thing that happened to me there was when me and some friends were wasted and cops tried to shake us down, but we told them to fuck off and they did.
Depends highly on where you go, but then again, that probably goes for every country. Even so, if you go make sure you have a local person you can rely on, and it really helps if you speak Spanish.
Narcos from Netflix triggered me to learn about drug cartels and money laundering