It would drive the price down because of the panic selling ,
But there would be others who would take the opportunity to grab some while it is being dump .
So we better be careful in selling our coins because some are just going to scare you to dump it and the coin could pump up again soon.
We can't avoid people that are willing to dump their coins because they panic especially when someone spread fud. Their main target is newbie and some weak hands holder. On the other side this is a opportunity for the bag holders to get cheap investment.