We should not wait for our elected officials, in President Obama's good words, "to come together and take meaningful action to prevent more tragedies like this, regardless of the politics." We should do our share. One way to proceed is to mark our homes, apartments and condos, with a "gun free" sign. Parents should notify their friends that they would be reluctant to send their child over for a play date unless the home was safe from guns. Residential communities should pass rules that ban bringing guns onto their premises, clearly marking them as gun free.
Anyone who puts up such signs will become an ambassador for gun control, because they are sure to be challenged by gun advocates to explain their anti-gun positions.
Put your safety where your social stand is. Via Amitai Etzioni: Gun-Free Homes and Communities.