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:

Our tribute to medical workers around the world who have put themselves at risk to fight #coronavirus &amp; save lives. Make sure to protect yourself before helping others. We are waiting for the moment that everybody could take off their masks. https://t.co/ESYVEigAti