[wildranter]

The police setup checkpoint happened to me once in Brazil. They let me pass that time because they had their hands already full of drivers to "deal" with.

[raverbashing]

It varies a lot, depending on where are you in Brazil (city/location), how busy are things, etc

I'd say most are 'legitimate' (usually Rio is the exception) and if there's nothing wrong you'll just go through without a problem.