The United States Constitution and Bill of Rights

How should the United States Constitution and Bill of Rights be interpreted? Strict (literal/original intent) or board/loose (reader and time period).

Assignment videos/Writing help videos if needed:

https://www.youtube.com/watch?v=nvHcWmC4_eM
https://www.youtube.com/watch?v=rK8B8vCpYAo
https://www.youtube.com/watch?v=QjLcLguoKC4
https://www.youtube.com/watch?v=XY-TAPfsoJU
https://www.youtube.com/watch?v=R_rnkM7jvlY&feature=youtu.be