What does the Law say?
The Federal Copyright Act (Title 17 of the U.S. Code) governs how copyrighted materials, such as movies, may be used. Neither the rental nor the purchase of a home video copy of a movie carries with it the right to show the movie outside the home. No additional license is required to view a movie inside the home by family or social acquaintances and in certain narrowly defined face-to-face teaching activities. Taverns, restaurants, private clubs, prisons, lodges, factories, summer camps, public libraries, daycare facilities, parks and recreation departments, churches and non-classroom use at schools and universities are all examples of situations where a public performance license must be obtained. This legal requirement applies regardless of whether an admission fee is charged, whether the institution or organization is commercial or non-profit, or whether a federal or state agency is involved.
The bolded is the line I am questioning--I don't think they mean if you step into your own back yard that you all of the sudden have to get a permit--I think "your home" would include your own yard. If I moved down the street to the park, that would be "outside my own home".