In the wake of Alex Pretti’s death at the hands of federal officers in Minneapolis, a growing number of corporate leaders, employees and Minnesota-based companies are speaking out. Some are condemning the fatal shooting and President Donald Trump’s broader immigration enforcement in the state. But the response has also exposed a familiar tension in corporate America: Powerful executives and public-facing companies often stay quiet until internal and external pressures converge — and until they believe speaking out together matters more than speaking loudly. “What’s really interesting is that the CEOs do engage when they get to a tipping point, and...