Naturally, the good folks at Capitolhillseattle.com have details about the Saturday night incident:

[A] man who had been carrying a spear was tased by an officer trying to remove him from the area of a convenience store. The first reports of the man causing a disturbance came in around 7:00 PM when the man was seen near Belmont and Olive carrying a spear with some kind of blades "duct taped" on both ends, according to police radio transmissions.

[...]

One officer described the man as spinning his weapon like "that character from Star Wars." Presumably, the officer meant Darth Maul.