Because I Can !

They can remove monuments and ain't a lot I can do about it !

I can stamp pennies and put them in circulation - they might be in circulation for hundreds of years.

Ain't much anyone can do about my pennies*. If it makes you mad "I WIN !"

 if it makes you glad " I WIN !"

 *Section 331 of Title 18 of the United States code provides criminal penalties for anyone who fraudulently alters, defaces, mutilates impairs, diminishes, falsifies, scales, or lightens any of the coins coined at the Mints of the United States. This statute means that you may be violating the law if you change the appearance of the coin and fraudulently represent it to be other than the altered coin that it is. As a matter of policy, the Mint does not promote coloring, plating or altering U.S. coinage: however, there are no sanctions against such activity absent fraudulent intent.  

So what this is saying is that it's illegal to alter coins for the intention of defrauding someone; for example, making a quarter look like a dollar, or changing the date on an old coin to one that is more rare and valuable. 

 And there are no sanctions against coloring, plating or altering U.S. coinage.

So, smashing a penny in a machine at Disneyland is perfectly legal.

  Altering a quarter or silver dollar so it forms a ring  that you can wear is perfectly legal. 

                                  Stamping words or letters on a coin is also perfectly legal.

Source = https://invoguejewelry.blogspot.com/2016/10/coins-currency-used-in-jewelry-illegal.html#:~:text=So%20what%20this%20is%20saying,is%20more%20rare%20and%20valuable.&text=Stamping%20words%20or%20letters%20on%20a%20coin%20is%20also%20perfectly%20legal.