Bias in algorithms is from human action...conscious or not.
There is no debate on the point above. All software is made by humans, even software generated by other software...humans originated the commands and instructions.
Let's just repeat that last part for you, guy: *humans originated the commands and instructions*
Here's an example you can understand: Which 'fact checking site' will you use?
Politifact.com - which is bullshit but has some factual information
Factcheck.org - not as flashy as Politifact and not quite as quickly updated but it's actual fact checking (Trump as melted their faces off).
So you make the call.
No matter what you do, someone will be able to rationally accuse you of "bias"