In discussions of the 2nd Amendment, the phrase "well-regulated" always fails in any modern interpretation, and it can ONLY be interpreted in the context of the Founders' original intent. In fact, that standard applies to the entire Constitution, and it has been abused ever since. (For an example, I invite the reader to review how Congress has abused the Commerce Clause to intrude itself into virtually every aspect of your life.)
Hat tip to Kathie Glass, for pointing me to this article about a broad daylight hold up of a restaurant in the Houston area.
To anyone who has been a gun-owner for any length of time, there are two memes that are repeated ad-nauseum by people who would seek to curtail the expression of your 2nd Amendment right: