Shakespeare on political darkness?

In light of recent political repression in Malaysia, is there anything the good Bard can say to us? I recall some activists warning the incumbent government to, "Beware the tides of March"! What other plays can help give voice to the present political plight in the country?

Beginner's Resources

1. A parallel text (e.g. No Fear Shakespeare)


2. CliffNotes - love the explanations at the end of each scene and the exercises at the back


3. Cambridge School - great pics and lots of ideas if you're planning a performance
   
4. Arden Shakespeare - good scholastic introductions
   
5. A contemporary movie! To get the full passionate flavour out!