Political Issues

Looking around at different news events that have been going on at the moment, while trying to decide on a political issue to depict in my photographs.
Could look at:

• Natural Disasters; Christchurch Earthquake, Japan Earthquake/Tsunami, Flooding in Australia (Brisbane)
• Nuclear Crisis; Japan
• Libyan Uprising; inspiration from the revolutions of Egypt and Tunisia the net country to vehemently protest against government autocracy is the North African country of Libya
• Terrorism
• Space- Galaxies, space ships, aliens. Idea of 'is there anything out there?
• BP oil spill

I also found this website (http://www.globalissues.org/issue) which had a good list of global issues such as:
-Poverty
-Global Warming
-Racism
-Aids
-Consumption/Consumerism
-Human Rights
-War on Terror

Need to think about how I can take photo's of these kind of issues, do I have access to this kind of imagery?? Is it possible?