CEDAR RAPIDS, Iowa (KCRG) - Friday marks the start of Houby Days Festival in Cedar Rapids' Czech Village.
City police are also watching for any potential fights or unrest this weekend as posts on social media are threatening violence at the event.
The Cedar Rapids Police Department told KCRG-TV9 that officers will be present at Houby Days.
Officers are looking at social media posts to make sure it's a safe event.
Houby Days runs through Sunday.