Running dogs

Running dog is a pejorative term for an unprincipled person who helps or flatters those who are more powerful and often evil. It is a literal translation of the Chinese pejorative 走狗 (pinyin: zǒugǒu), meaning a yes-man or lackey.–Wikipedia
“Running dogs” is a description of the picture above.

Vanity plates

My friend JB does not care for the personalized plates which the State of Virginia makes available.
“In addition to displaying special plates, motorists can add a personalized character combination to their plates using up to seven characters.”

What does the driver wish to communicate with ZZZZZZZ?
What does the drive wish us to take away from the Taijitu?