Facebook said Wednesday it will move to muffle the reach of political content on the social media platform, saying it will start testing news feeds for users in Canada, Indonesia, and Brazil. “During these initial tests we’ll explore a variety of ways to rank political content in people’s feeds using different signals, and then decide on the approaches we’ll use going forward,” Facebook’s product management director, Aastha Gupta, said in a blog post on Wednesday. Her comments echo those made by Facebook CEO Mark Zuckerberg several weeks ago. Zuckerberg said on Feb. 2: “We’re also currently considering steps that we can take to reduce the amount of political content in [the] news feed as well.” Users will be surveyed about the tests to reduce political content, said Facebook. Individual politicians’ pages will not be exempt from the tests, according to Gupta. It’s not clear how the change will affect media …