CLEAN : Ferguson braces for another night of violence

The speaker expresses concern over the presence of force in their city, suggesting it is meant to intimidate rather than protect. They feel it only incites anger and portrays the city negatively. Returning home from college, they are shocked and saddened by the situation, feeling unsafe and scared by the presence of the National Guard.

What does the speaker mean by saying 'it's heartbreaking'?

Describe the speaker's feelings upon returning home after being away.