I can see certain employment being affected in the short term, specifically low totem pole hourly shift wages. But then those are people who have long suffered from that particular effect from outside forces. I suspect and believe that the people that might be in this class are also ones who've seen the net positive gains President Trump has achieved that directly have impacted their lives over the past 3 years, despite the constant attacks and blocking maneuvers of other persons.
It's February. Coronavirus will be a nothingburger before June.
Honestly? Learn Economics and dig into the actual fundamentals of a company, and look at their reported balance sheets. A strong company is a strong company, regardless of how wild their stock price swings are. Look at their dividend return rate, and see if it's being affected.
Or, find a mutual fund run by a person or group whose values and investment philosophies are in line with your goals, and trust them to do the above work.
I'm not joking when I say, we as individuals lost any casual utility or informative metric from the DJIA and S&P 500 back in the late 90s. I was playing the markets heavily then, and did well enough (helped mom invest my dad's death benefits enough to pay off 2 mid-priced college educations and 2 new cars, with the principal still intact) but saw the writing on the wall with the way things were starting to swing wildly.
DJIA/S&P500 listed stocks are clobbered by high frequency trading that can cause frightening swings in valuations in very short periods of time. Basically, the noise is overtaking the signal.
It would depend WHY the indexes are swinging. True, the HFT algos reek some havoc on a day to day trading, but if the indexes are dropping NOW due to supply shortages and business activity, that will lead to job loss. Companies won't continue to pay employees if their businesses shut down or slow down.
Trump has built the majority of his platform over low UE rates and the stock market climb the last 3 years. Both of those are a risk of being spanked.... and when people are hurting, they will gravitate to the one who promises the most Freebies...