Does the Tao even address negative energy? I think it addresses attitudes and expectations. I am not an expert but all the Taoist writings I have read have nothing to do with "negative" energy. That "negative" energy is a figment of your imagination. If you feel down from external stimulus then you need to examine the origin of your feelings, not blame the stimulus for taking you down. We can't be "positive" or Happy and content 100 % of the time as we are experiencing being human on planet earth and there is no natural emotional flat lining.
You have ups and downs and you have to be responsible for your own feelings. In the 80's I did what another poster in this thread did recently, I quit watching or paying attention to the news. If something caught my attention I did some research so I could have a more balanced understanding of it. If it triggered anger or fear I examined that.