They call this policeman "the worlds most patient cop". Clearly he could have arrested this man for his abusive language but chose not to and activated a different strategy to deal with this man having a temper tantrum. If you were both a cop and an Aikidoa, would you respond in this way, or in a different way?
Look up "woofing." Woofing training makes a big difference for me. It is too much for some folks, especially if the woofer has knowledge of the person they're woofing at. Start small and work up to a big woofer over time, unless you already know you really can let the words roll off.