Curious graffiti has been spotted in Moscow. Is someone against finding out about cultural heritage sites?

Left to right:
Lissitzky's Ogonyok Printing Plant,
Lumiere residential apartments, Zhurgaz residential building

ЖИЛОЙ ДОМ СОТРУДНИКОВ АКЦИОНЕРНОГО ОБЩЕСТВА "ЖУРНАЛЬНОГО-ГАЗЕТНОГО ОБЪЕДИНЕНИЯ (ЖУРГАЗ)"
STOCK ASSOCIATION "ZHURGAZ" DWELLING APARTMENT
Архитектуры М.О. Барщ, Г.А. Зундблат
1931-1935 гг.
ОБЪЕКТ КУЛЬТУРНОГО НАСЛЕДИЯ ФЕДЕРАЛЬНОГО ЗНАЧЕНИЯ
FEDERAL IMPORTANT CULTURAL HERITAGE OBJECT
Подлежит государственной охране (subject to government protection)
http://um.mos.ru/houses/9269/

Currently, the Zhurgaz building along with the Узнай Москву sign is covered in graffiti despite being "subject to government protection"

... it is curious how "neatly" the
Узнай Москву sign has been painted over...
AND Lissitzky's Ogonyok Printing Plant (located right next door), does not even have such a plaque despite despite being an
object of regional importance. Also curious.