Who painted over the pen mural?

Last summer, I was in downtown LA for an appearance in federal court. I hadn't been to the federal court building in some time, and parked in a parking lot that was new to me. Bordering the parking lot was some sort of huge industrial industrial building. One whole side of it was painted with a mural. I took pictures, but for some reason, the only one I can find is this close up of just one end of the mural . . . but it includes the pen, so it's the important part (I honestly cannot remember what else was in it):

I haven't cropped out the cars here, because I'm missing the pictures of the whole building, and I wanted to give you some perspective to see how big this pen was. That's right, I said was. Because I was back in federal court a month or so ago and that part of the wall looks like this now:

(Sorry for the fuzzy photo, but I had to crop from a larger view.) What a shame. Even more of a shame when you see the whole side of the building and realize that the entire side was a mural:

I was looking forward to seeing the mural again. When it wasn't there, not only did I do a double take, I really questioned whether I had imagined things before! I'm glad I had one of the older photos just to know I wasn't going crazy.

My question is this: who on earth could possibly think this is an improvement? There's little enough beauty in downtown L.A. Here was a nice little patch of it, and they paint over it! This would have bummed me out even if there were no pen in the mural.

Who painted over the pen mural?