At least this one photo seems to be real: It is featured in an article from The Wall Street Journal, which is described as "Updated Dec. 10, 2017 11:59 pm ET" and according to the article "Appeared in the December 11, 2017, print edition", written by Chun Han Wong.
The photo is captioned as "Screens above a Gucci store in Shangha (sic!) show Communist Party symbols and General Secretary Xi Jinping's slogans, as part of a nationwide campaign to publicize the outcome of the party's 19th National Congress."
It is credited with "PHOTO: JAMES T. AREDDY/THE WALL STREET JOURNAL". According to his WSJ author page, "James T. Areddy is a China-focused correspondent for The Wall Street Journal."
I'm unsure however where in the photo "General Secretary Xi Jinping's slogans" are displayed. Perhaps they were faded out of the LED display (if this is one) the moment the photo was taken.
The 19th National Congress of the CCP took place in October 2017.
It might be interesting to note, that the design of hammer and sickle seems to be specific to the Chinese Communist Party, and distinct from other designs such as the Soviet Union's, as may be seen from the "knob-shaped" handle of the sickle.
A similar photo showing hammer, sickle, and Chinese characters underneath appeared in an article of the art magazine frieze from 8th December 2017. The caption reads "Communist Party Propaganda above the Gucci shop, Shanghai, 2017", but the photo does not seem to be credited. Possibly, the display may show at least hammer and sickle, and hammer, sickle and some slogan alternating.