Two separate incidents involving journalists who work for Gannett and ESPN have renewed attention to the issue of how journalists should exercise their right to free speech.

Earlier this week, editors and publishers at several Gannett papers said that its journalists had violated the company's values by signing petitions calling for Wisconsin Gov. Scott Walker's recall. ESPN, meanwhile, dropped its ban on staff posting photos of themselves wearing hoodies to show solidarity with Trayvon Martin.

These news organizations' decisions raise interesting questions: Which of these types of speech should journalists feel free to exercise? And should journalists who are covering these stories limit their speech more than those who aren't?

We asked our Twitter followers about this (take our poll here), and hosted a related live chat with Reuters' Jack Shafer. During the chat, we discussed both situations and responded to feedback and questions from chat participants.

You can replay the chat here ...