Just looking at the videos you post here it's obvious that the government doesn't give a damn about "their people".
However, I don't think Brazil is the only country where this is going on. 3rd world countries do have a different definition of "poverty" compared to first world countries, and perhaps it's that the difference between rich and poor is more obvious, than it is, in say... Western Europe or even in the US.
It's interesting to note how in this day and age, even non-violent protest will be met with force. There is no protest unless the governing force finds it justified... and let's be honest, they know what they're doing, so any "critique" towards them is not justified in their opinion. And that's the way it has always been.
However, on a global scale, the problem addressed in the video about the world cup is questionable. But we have seen this before. The olympics in China and the World cup in South Africa. What happened to those venues? Their among the most worn and torn buildings, in the area, and they cost millions. Yet, just because there's this prestigious event that comes around "once a lifetime" (and which one might argue... why do we have to cram them all in the past 50 years, and not define lifetime by the next 1000 years?) governments will turn sideways and restructure their priorities and finances.
If I were new here (new as in... "new to the human race") I'd think they wouldn't know better... but in fact, they know better, which makes it come across way more ignorant.
What many don't realize (I think), is that the way these things keep happening, at some point there's only a marginally small group of people left that will want to identify with a country. And that's where you can wonder how something is still a country in the first place