I’ve heard some, even here, call it good policing. Cops noticing someone they want to pull over and then looking for some excuse to do so. Cops who call it ‘intuition’ and decide to stop and question someone who has given them no quantifiable reason for doing so, just on the basis of ‘gut’ feelings. Copsuckers stand up for police doing it.
You have to have legitimate probable cause to charge someone of a crime (IE, arrest); you only need be able to articulate your suspicion to stop and question someone. Both justifications must be stated on the incident or arrest report.
If caught lying - they should suffer the severest punishment available. Bad cops are worse than no cops.