GLOSSARY: Kettling 1: meaning and history, p4

will excuse a violence response by the police:
i.e. will provide the police with a dishonest argument to show that their violence is necessary

have taken advantage of:
if you take advantage of something you use it to your benefit. We often speak, for example, of taking advantage of an opportunity.

social networking sites:
A website where people interact with one another, like Facebook, Twitter, or Linkedin

allusion:
“allusion” is the noun form of the verb “allude.” If you allude to something, you refer to it or suggest a connection to it without actually mentioning it.

nursery rhyme:
a nursery rhyme is a traditional (and often very old) poem for young children. A nursery is a room where children play, sleep etc. The word “rhyme” in this context has the same meaning as “poem.” The word is more commonly used as a verb when speaking of two words which rhyme because they have a similar final sound (e.g. “food” and “rude.”)