Secondly - your question. The line is drawn at the point where an individual’s pursuit of happiness interferes with another’s pursuit of happiness. It's where an individual’s pursuit becomes uncivil or inherently selfish. This runs from the extreme of breaking criminal law to simple breach of the peace. The line is drawn at the point called lack of civility.
Good thing you caught the spelling error, thanks.
Who determines whether one persons’ point of interference interferes with anothers? How are unreasonable points of interference determined?