It has come to this: US media associations have called on police and government to ensure the safety of journalists, a two-page 'tip sheet' tells how to protect yourself, and state associations are working to ensure reporters understand their rights at protests and avoid arrest.

A joint statement by the US News Media Alliance, America's Newspapers and the National Newspaper Association calls on law enforcement and government officials to "not only allow journalists to report on the historic events currently unfolding, but to provide journalists with the necessary protection in order to remain safe to do their jobs".

Journalists are serving a critical role in providing information the public needs to know in order to stay informed about what is happening in their communities, as well as to keep them and their families safe.

In some cities, there have been reports of journalists being attacked and harassed by law enforcement while trying to do their jobs. "Local journalists are not only covering the protests as they are unfolding, but they are telling the stories behind these events, and they will be there in the months ahead to report on the aftermath and local repercussions," says the statement.

Australia is preparing a complaint after a Seven News reporter and a cameraman were attacked by police in Washington who were clearing the way for president Donald Trump to cross the road for a photocall.

Arizona and Michigan newspaper associations are among those which have provided guidance on press protections at a protest.

Here's a link to the two-page PDF Tip Sheet on how to protect yourself before and at a protest, produced by US-based Reporters Committee, details of which may only be relevant in the US.