Anonymous has been involved in activism over the years, much of it including online activity of dubious legality. In recent time, Hacktivism has become a method of choice for making their voices heard. Disrupting security systems, defacing websites, and acquiring internal information can catch the attention of huge entities like Visa and PayPal just as well as traditional sit-ins and picket lines. In the wake of Ryan Schmeary's arrest earlier this week, here's a brief summary of recent legal actions taken against Anonymous-led activism across the world.

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• Arrests in Australia: Sydney Morning Herald articles in January 2010 and November 2010
• Arrests in the Netherlands: CBS News article in December 2010
• Raids in the United States: FBI Press Release in January 2011
• Arrests in the UK: Reuters article in January 2011 and in June 2011
• Arrests in Spain: Reuters article in June 2011
• Arrests in Turkey: Reuters article in June 2011