Not as much as one might think. They have an emergency situation where steel barriers are erected around Congress after the outbreak of fighting with political demonstrators.
We just have an 'exclusion zone' around Parliament and a woman who is arrested merely for reading out the names of the war dead in Iraq at the Cenotaph. No, there's not a lot of difference. We also have extra-judicial killings and arrests. No, there's not a lot of difference.