The war against light. Along with all the other things being discussed, if people are forced to stay indoors throughout the springtime and early summer the absence of sunlight will cause very real and very serious impacts to their brains, psychological well being and physical health. A virus wont even be necessary the cull the herd. POTUS seems to be the only one who knows what he's talking about.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2728098/
https://www.healthline.com/health/depression/benefits-sunlight#mental-health
https://www.tricitymed.org/2018/08/5-ways-the-sun-impacts-your-mental-and-physical-health/