political violence, terrorism, or violent demonstrations are historically not an issue in rio de janeiro - however visitors should avoid participating in protests and soccer-related riots - in fact, as seen in the demonstrations of 2013, there is a minority of protesters specifically engaging in vandalism, as a response for social policies on which the media focuses.

rio's public transportation network of buses, metrô, and taxis is generally safe, but buses and minibuses are still subject to occasional robberies, especially at night, and in non-touristic areas far from the zona sul - generally speaking, crime in rio will probably not affect cautious visitors who use common sense, do not engage in reckless or illegal behavior, and follow safety guidelines. 

we have an entire section of this portal detailing all type of safety concerns in the city, covering a variety of topics ranging from how to best prepare for heat, hiking, and general precautions.