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:

Celebrating two important milestones this week: #UNGA75 and the 25th anniversary of the founding of Tanzania's Legal Human Rights Center. The US is proud to partner with @UN and @humanrightstz to promote and protect human rights around the world https://t.co/8vr0mFvHEM