Claim: Facebook has instituted a 'no swearing' campaign and threatened to lock the accounts of users who employ profanity.
Examples:[Collected via Facebook, March 2014]
No swearing campaign on facebook
As of march 20, 2014, we at facebook will be launching a "no swearing" campaign. anyone caught using profanity will have their account locked further investigation.
This due to the new laws issued by our legal department (section 182 P34b) as new advertisers have petitioned for a "cleaner" family friendly social network.
If a user continues to use profanity the account will be shut down and a permanent ban will be placed into effect immediately.
Origins: This message purportedly issued by Facebook CEO Mark Zuckerberg claims that beginning on 20 March 2014 Facebook will be implementing a 'no swearing' campaign in order to create a "cleaner family friendly network" at the request of advertisers, and that users caught swearing on that social network will have their accounts locked pending further investigation, with repeat offenders having their accounts permanently and immediately shut down.
The message is just a hoax: Facebook has made no announcement nor sent any messages about launching an anti-profanity campaign like the one described here.
Facebook users have access to profanity filters that will block posts containing certain offensive words, and Facebook's Community Standards and Statement of Rights and Responsibilities sets down some guidelines about posts that might be considered hate speech, bullying, or harassment, but Facebook has no (and is not implementing any) general overall ban on swearing.