You never know who’s watching.
And it’s often the least effective way for getting what you want.
Instead, get good at identifying the weaknesses of others. Feed into those weaknesses, make others feel for your situation and create a desire within them to help you. The result of their help will trump anything you would have received as a result of lashing out.
But there are exceptions to everything. When properly timed and executed, lashing out can get you exactly what you need. Play this card with caution.