There is no bias, no suppression of voices. Rather, the algorithms in the background will reinforce what someone “likes” or searches. In the case of google or safari, probably more moderate to liberal thinking people use those platforms so, in a general way, a search may pull up more moderate or liberal stories. Likewise, explorer and Firefox are likely used by more moderate to conservative thinking folks and a search would likely pull up stories with those biases. People need to educate themselves as to what is mechanically happening rather than being all paranoid and superstitious.