To put things in perspective: https://en.wikipedia.org/wiki/List_of_largest_daily_changes_... Saying "Biggest Point Drop in History" is a deliberate attention-grabber and incites more fear than it probably should. We should be more concerned with percentage changes and at -4.6% this doesn't even make the top 20 daily percentage drops, which cuts off at -6.98% for number 20 (see above link).
But I think it clearly shows the standard of journalism we live with. This is a headline about numbers so we can easily debunk it by looking at the numbers, but almost every headline you read has been sensationalized in a similar fashion. This is the kind of reporting you expect from tabloids.
Unfortunately this is the kind of reporting I've come to expect from everyone. I can't necessarily blame them - their job is getting more views than the other guy and "Dow Has Bad Day" doesn't attract as many viewers as "DOW HAS WORST DAY EVER". At the end of the day it wasn't a lie, it was just going with the more interesting stat without regard for whether or not it was the most informative for readers. I wish it wasn't so, but we can't expect better without changing the incentives.