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:

Régimen de Castro no carece de falsos pretextos al encarcelar a activistas democráticos. Usó el #COVID19 para condenar a Keilylli de la Mora a 18 meses de prisión por quitarse brevemente el nasobuco. Exhortamos al régimen a liberar a @keilylli y a todos los prisioneros políticos