Five people were randomly murdered in Maryland. I cannot help but think that if Maryland allowed citizens to carry firearm's for protection, some of the killings could have been avoided.

While Maryland has a concealed carry law, implementation of that law makes it virtually impossible to get a permit. Packing.org points out that anyone in Maryland hoping to get a carry permit should read this FAQ for proper discouragement. If you still aren't discouraged, take a look at Maryland's Article 27, Section 36E.

In fact, the Maryland constitution mentions nothing about any right to bear arms. A LexisNexis search was equally disappointing. However, for Maryland's attitude on guns, check out these articles under 'Declaration of Rights'.
Art. 28: That a well regulated militia is the proper and natural defence of a free Government.
Art. 29: That standing Armies are dangerous to liberty, and ought not to be raised, or kept up, without the consent of the Legislature.