Once again, judical fiat overrules the will of the people

Yahoo! News - Amendment Banning La. Gay Marriage Tossed Millions of voters overwhelmingly approve a law, and one man tosses it out. Someone explain to me how this is not an example of tyrrany? This could be a law banning billboards, and the issue would be the same. This isn't a case of constitutional checks and balances. This is the will of the people being squelched.