The Olympics are already a success for Rio. Were it not for Olympics preparations, the unemployment rate would be easily 30% higher, with all the social disruption that comes with it. I'm sure that the games themselves will come off, at least, acceptably. The army will round up the usual suspects before the games and pack the tourist areas with soldiers. A few dumb tourists will get mugged. A few local Black teenagers will be killed by over zealous military police. But, both those things happen all the time. In short, the games will be a success for Rio.