From the original YouTube description in http://www.youtube.com/watch?v=e-dcBmvYejY , which also gives precious further information and links:
"Uploaded by OurNeedToAwaken http://www.youtube.com/user/OurNeedToAwaken on Oct 16, 2011
From: Al Jazeera
Arrests at New York and Rome 'Occupy' rallies
Dozens detained in New York as anti-Wall Street protesters march on Times Square, while protests turn violent in Italy.
Last Modified: 16 Oct 2011 04:30 (...)"
This video is interesting because it illustrates the international dimension of the protests, as well as the common issues they meet: provocateurs, police repression etc.