Toe the line
Definition 1 of 2
Pro Tip 1/3Power Dynamics
Used when authority expects obedience, often in workplace or military. 
The soldiers were reminded to toe the line or face consequences.
Pro Tip 2/3Group Pressure
Indicates peer pressure to conform within a group or society. 
Teenagers often feel they have to toe the line to fit in with friends.
Pro Tip 3/3Cultural Context
May imply suppression of personal freedom in certain cultures. 
In that company, employees often have to toe the line.