Today was the Olympic torch relay in Nagoya (Japan).
The event has run without too many serious incidents by deploying about 3000 police officers to ensure an event safely.

Until Naganos have come thousands of Chinese to support the event, most students living in Japan. Many carried flags of China. Have also approached a few people with Tibetan flags, so police had to be very careful to not have setbacks between these two groups.
Even with all the precautions you have pesplegado Japan, the event has finished with 5 arrested, one for throwing eggs, others jump to grab the torch and another to do strange things with sparklers. In addition there have been four minor injuries in the incident.

If I heard right, people who have run in the torch relay had 48 police around them, plus 2 special police Chinese torch guards. Normally there are many more Chinese police protecting the torch, but Japan refused to come over them.

In the first video in English can see the security measures that were set for the event and the second you can see the mishaps that have occurred.