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:

Londoners, if you’re struggling today, remember this:

Tomorrow you’ll wake up in a European city, where hundreds of languages are spoken and every race, religion, class, country and culture are represented. London will always be European, and London will always be open.