Defacing a Rothko, pissing in a Duchamp, etc.

There is a great deal of noise in the press about that Russian guy who left his signature on a Mark Rothko painting. Here is a part of the painting with the addition:

Says the alleged vandal:

But I believe that after a few years they will start looking for it from the right angle. So that's why I did it.

May the connoisseurs of the art and treasurers of Tate spit in my face and beat me black and blue, but frankly I can see some truth in what the vandal is saying. The painting is much more alive now.

As for the other case mentioned here - a man pissing in a Duchamp "fountain":

If there is justice on the planet or even somewhere among the stars of this universe, the man who did it will get a prize. And the more men (and women, properly equipped, of course) do it, the better for this specimen of art.

As for kissing a Cy Twombly canvas (like this one, I wonder?) while wearing lipstick: not sure anyone, the author included, will notice. So it's neither here nor there.

Etc.