Brazilian drivers of motorized vehicles are extremely rude and dangerous and have no respect for cyclists; men, women, old & young people, bus drivers ... even cops & politicians.
There is no respect for cyclists on Brazilian roads and if something happens they blame you because you are in there way.
Brazilian drivers only respect vehicles larger than themselves, as a cyclist your just a small insect in their way. Traffic laws in Brazil are poorly respected, traffic lights mean nothing to them, you always need to look behind and around yourself for fear of a ferocious and/or ignorant car driver.
Brazilian drivers need to be schooled into respecting the space a cyclist needs.
As a European I am not used to this kind of competition for road space inside a city, I always make sure my brakes are in top condition to be able to stop in a fraction of a second and always use a helmet as precaution.
I love to ride my bike but sometimes it really gets on my nerves, especially when it happens several times in a few minutes. The best thing to do is take your bike to the countryside and enjoy the mountains and surrounding views.