Act 1696, or the Flag Act, (Philippine Commission Act № 1696, August 23, 1907) is an act of the Philippine Commission that outlawed the display of Katipunan flags, banners, emblems, or devices in the American-controlled Philippine Islands. Both the current national anthem, Lupang Hinirang, and the present-day Flag of the Philippines, were covered by this ban.
The Flag Act was repealed by the Philippine Legislature in 1919.
References
Flag Act (Philippines) Wikipedia(Text) CC BY-SA