In the above video just past the 2:38 mark, the below point is made, the strongest point of the video:

Culture has a right to redefine marriage.

Spousal rights and marital traditions have changed. However, marriage has always been between males and females because of the unique function they perform in society.

Marriage can’t be a social construction because cultures emerge when humans reproduce. 

This means that cultures cannot be the constructors of the marriages that make culture possible in the first place. Bricks make the building, not the building the bricks. Culture does not construct marriage. Marriage and family construct culture.

The above is a favored video of mine. The point about police work and other jobs in society and later how the government doesn’t discriminate against other professions when it promotes police work. Great, useable point.