Clarify "televised" information, please

I am a Vietnam War scholar, writing an article about veterans who have reported being spat upon during the Vietnam War. You stated that you know of a televised spitting incident in Seattle. Please furnish me with more specifics, such as dates, place, etc. If anyone else who reads this has information or experience about spitting, please contact me. Thank you. Renate W. Prescott, rprescott@geauga.kent.edu