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:

Wang Yi spoke with Singapore Foreign Minister Vivian. Wang: The attempt to stigmatize China is shameful, which will only split international community, &amp; not help control the virus in that certain country. Vivian: Singapore never agrees with stigmatization of specific countries. https://t.co/GxEl21Ejgv