Subscribe | UPI Odd Newsletter Subscribe SAN MARINO, Calif., June 11 (UPI) -- Politics really is a dirty business. A California mayor was caught on camera tossing a bag of dog poop onto the walkway of a man who opposes the mayor's stance on a nearby dog park. Advertisement San Marino Mayor Dennis Kneier can be seen tossing a sealed bag of dog feces onto the private walkway of his neighbor, Philip Lao, in surveillance footage. In the video, Kneier's wife points at the walkway and then he tosses the bag. The Kneiers do not own a dog. "I made a mistake of putting it in his walkway," Kneier told the Whittier Daily News. "Rather than leaving it, I should have walked on by or disposed of it properly." He has also formally apologized to Lao with a letter. That might not be good enough. "He thinks that he can just smooth things over. He thinks that he can have the police drop it," Lao told KTLA. "But I will pursue it. I'm in touch with a lawyer, and we're thinking of pursuing harassment." Lao has protested against the nearby dog park in the past and also has "no poop zone" signs in his front lawn. According to Lao, Kneier does not care for his signs. Advertisement Read More Moles linked to risk of breast cancer Pakistan launches reprisal air strikes against Taliban 'hideouts' after airport attacked Kelly Rowland posts apparent pregnancy announcement Lamborghini crashed, left burning in New Jersey No more lions, tigers, and bears? Circus performers oppose animal ban in Mexico