QUESTION: What does the upsidedown Triangle mean?
For me, what Trump is doing is the HAKINI-mudra.
Many people unconsciously perform this mudra when they are thinking about something, or simply when they are resting. What they don't know (maybe Trump knows) is that they are doing one of the most powerful mudra to take advantage of the energy and power that exists in our sixth chakra, or also traditionally called "third eye".
