This resonates with me:

I don’t tolerate slack in an organization. When someone is underperforming I’ll point it out. While interning at a large electronics manufacturer I used my final presentation to highlight multiple issues in the company that I had observed. My manager squirmed wearily in his seat. The CTO called me to his office for more details. He thanked me for my candor.
That manager never did offer me a job. In fact, most of the department was laid off a month later. That department was broken. The fact that an intern broke the ice was case and point. I’m glad that my words made a difference for the employees who remained.