You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

A graffitti on a wall of residential building near #Moscow paying tribute to all medical workers fighting #COVID19 and saving our lives. We are endlessely grateful to all such angels accross the world! 🙏🏻 #Russia #pandemic #medics #Doctors https://t.co/F1TurWY3VO