Well India is imploding from Covid right now. Maybe it spreads over to the rest of the world? However there are like less than 2% fully vaccinated in India compared to around 30% in the US. Most of Europe still under 10% though too, but it's mostly people aged 60+ that don't work or socialize much anyways. FED can prop up a market but they can't stop it from dropping if the panic comes. IMO there will be a 30%+ rug pull to like $2600 SP500 at some point. And if it happens it will happen much faster than the march20 sell off. Charts are still looking bullish for the most part though. so the timing is probably still off.
In May pretty much all states will open up, economy is buzzing, travelers traveling, good ol' times back, Covid down. Should be good for the market.