The bad language in that show overstepped the limits/boundaries of what should be allowed on television.
Meaning of overstep in English
(Definition of overstep from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
overstep | Intermediate English
to go beyond what is permitted or acceptable:
Examples of overstep
overstep
A simple apology online and that's all you're going to do about an incident that seriously oversteps ethical borders?
From CNN
But that would only slightly overstep their boundaries!
From Los Angeles Times
The commanding officer either disobeyed orders or wildly overstepped his authority.
From Huffington Post
In the case of the spotted owl, such congressional overstepping would derail more than two decades of ongoing planning, scientific studies and judicial rulings.
From Washington Times
It has made headlines over the last few years for its secretive mass surveillance methods, which overstep the mark in the eyes of many people.
From Business Insider
Fuel-efficiency mandates restrict consumer choice and completely overstep the boundaries of the role of the federal government.
From Heritage.org
He said the ban overstepped the role of government.
From Baltimore Sun
Give state officials the power to sue in federal court when federal officials overstep their bounds.
From Dallas Morning News
They also contended that the governor had overstepped his authority by restoring rights en masse rather than individually, as every previous governor had done.
From Washington Post
Opponents sued over the summer to keep the measure off the ballot, arguing it overstepped the powers granted to the citizen initiative process.
From The Seattle Times
Apple had refused to unlock the phone for the government in a high-profile standoff, citing cybersecurity risks and overstep of the law.
From CNBC
A government that oversteps its legitimate limits and undermines the proper responsibility of other institutions is acting not only unconstitutionally, but also unjustly.
From Heritage.org
Months later, all the charges were dropped, as prosecutors said a grand jury had overstepped its authority.
From Washington Post
Even if she overstepped her authority, she ultimately had received the worst political punishment by being voted out of office.
From Foreign Policy
Even if those bounds are not generally agreed upon, it was overstepping bounds it should not overstep.
From NPR
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.