Dangers of going underground.
D022126:Access to Information; D017087:Animal Rights; D000818:Animals; D002960:Civil Disorders / Q000517:prevention & control*; D003219:Confidentiality; D020407:Internet; D012108:Research Personnel / Q000523:psychology*; D012637:Security Measures; D006113:United Kingdom; D014754:Violence / Q000517:prevention & control; D014861:Washington