From this story on wdjb7.com:
It started when a man and a woman were walking along the Greenway, and came upon two other men who were fishing. A fishing pole accidentally hit the man and the woman. The woman who was hit by the pole told police that she "did go off," and began arguing with the two men. That's when she flashed two tattoos on her arm, one of which was a swastika; the other had the initials "SS." She didn't tell police why she flashed the tattoos. Police say after she flashed the tattoos, a fight broke out that involved sticks, rocks, and fists.