Objectivity and modern journalism: What can we learn from OWS journalist firings?

At least two journalists were fired after participating in the Occupy Wall Street protests. ONA’s Issues tumblr asks an important question about modern media ethics:

In the digital age, is there a difference between say, retweeting protest signs on Twitter and holding a sign live at the rally? What is the role of objectivity in modern journalism? Did their employers overreact? 

What say you?

Source: onaissues