In article , says...

On Thu, 28 Mar 2013 16:41:18 -0400, wrote:

On Thu, 28 Mar 2013 09:10:35 -0700, jps wrote:

that gunshot fired a year
ago in East Baltimore


Maryland has some of the strictest gun laws in the country. They must
not really be that effective I guess.

The facts are a bit more nuance that making the case either way on
strict gun laws, except it seems with regard to carry permits. Those
cause more problems.

http://factcheck.org/2012/12/gun-rhetoric-vs-gun-facts/

Why doens't the article pick a date and compare all scenarios using the same time period?