A roadblock is a temporary installation set up to control or block traffic along a road. The reasons for one could be:
In peaceful circumstances, they are usually installed by the police or road transport authorities; they are also commonly employed during and are usually staffed by heavily armed soldiers in that case. During and , both police and demonstrators sometimes use roadblocks.Who Approves of Those Who Block Roads to Protest in the Americas? http://www.vanderbilt.edu/lapop/insights/IO921en.pdf Clearing the Path for Land Rights, One Road Block at a Time: How Peru's Indigenous Population can Assert Their Land Rights Against Peru's Government, 1 Global Bus. L. Rev. 229 (2010-2011)
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