From CGI's Hissing_Opossum:

This is a list of unconstitutional laws that have been on the books, and I am certain that many Americans are unaware of. I am grateful for this forum, we can share this information to each other:)

Small snip of 'laws'

36 U.S.C. §176 Respect for flagNo disrespect should be shown to the flag of the United States of America; the flag should not be dipped to any person or thing . . .

(g) The flag should never have placed upon it, nor on any part of it, nor attached to it any mark, insignia, letter, word, figure, design, picture, or drawing of any nature. . . .

(i) The flag should never be used for advertising purposes in any manner whatsoever. It should not be embroidered on such articles as cushions or handkerchiefs and the like, printed or otherwise impressed on paper napkins or boxes or anything that is designed for temporary use and discard. Advertising signs should not be fastened to a staff or halyard from which the flag is flown.

(j) No part of the flag should ever be used as a costume or athletic uniform. However, a flag patch may be affixed to the uniform of military personnel, firemen, policemen, and members of patriotic organizations. . . .

(k) The flag, when it is in such condition that it is no longer a fitting emblem for display, should be destroyed in a dignified way, preferably by burning.

Contrast this with the following statute:

18 U.S.C. §700 Desecration of the flag of the United States; penalties(a) (1) Whoever knowingly mutilates, defaces, physically defiles, burns, maintains on the floor or ground, or tramples upon any flag of the United States shall be fined under this title or imprisoned for not more than one year, or both.

(2) This subsection does not prohibit any conduct consisting of the disposal of a flag when it has become worn or soiled. . . .

(d) (1) An appeal may be taken directly to the Supreme Court of the United States from any interlocutory or final judgment, decree, or order issued by a United States district court ruling upon the constitutionality of subsection (a).

(2) The Supreme Court shall, if it has not previously ruled on the question, accept jurisdiction over the appeal and advance on the docket and expedite to the greatest extent possible.

36 U.S.C. §410 Propaganda activities prohibitedNo part of the activities of the corporation shall consist of carrying on propaganda.

40 U.S.C. §13k Parades or assemblages. . .It shall be unlawful to parade, stand, or move in processions or assemblages in the Supreme Court Building or grounds, or to display therein any flag, banner, or device designed or adapted to bring into public notice any party, organization, or movement.