Sec. 4 of the EO reinstates two previous orders (2020/21) aimed at "Protecting America's Monuments from Vandalism."
This is apparently part of a larger crackdown on crime.
There are listed several "recent examples of conduct necessitating reinstatement."
The first is what the order calls "pro-Hamas related vandalism of historically significant public monuments and related assaults on Federal officers."
Vandalism in Lafayette Square and of the Christopher Columbus fountain are also listed.