I don't know if that's a good way to look at it. It's not just "bears" selling when you have a big drop. It's people who need the money for something and are worried about liquidity.
Trading halts may or may not fix that, but that's their purpose.
> It's people who need the money for something and are worried about liquidity.
Then they're doing it wrong. You shouldn't have money that you need immediately in the stock market. Yes, people will do that anyway, but I'm not sure we should cater to those people when the health of the markets as a whole are at stake (assuming circuit breakers are effective; up for debate).
Trading halts may or may not fix that, but that's their purpose.