High school football games were reportedly cancelled.
Many listened live to police radio communication - available online - and the hashtag #louisvillepolicescanner was mentioned more than 100,000 times on Twitter.
But did the much-hyped event actually lead to a spike in recorded crime?
Thankfully, the weekend passed without major incident.
First, the report from Kentucky – and then we’ll share why schools are cancelling functions, the city, county and state is on high alert, and the FBI has dispatched federal agents into the community.
None of which is in the least way funny: A flier for a proposed “Purge” in Louisville is getting the attention of the FBI, local police departments, and even Jefferson County Public Schools.
The premise is that an anarchic splurge will have a calming effect on the populace for the rest of the year.
Early last week, an unidentified teenager borrowed the concept and took to Twitter calling for a real life "purge" in his home town.
(and its recent sequel) failed to instigate the proposed crime spree of the films, reports
It will now be played at Simon Kenton on Saturday morning.
Jeffersonville Indiana Police and the FBI have also released statements saying they are aware of the threat.
There were two fatal shootings on Friday night, but neither could be connected to the hoax.
Dwight Mitchell, a Public Information Officer with the Louisville Metro Police Department told BBC Trending: "Luckily nothing was reported that had anything to do with a 'purge'." The police have now tracked the teenager down, and chosen not to press charges after he apologised for his tweet.