Just a quick test:
If you search “Ben Shapiro” on Yahoo or DuckDuckGo, you basically get a page of objective news articles, videos, along with links to biographical information.
If you search it on Google, you get mostly the same things, along with two headlines that contain supposedly discriminatory statements made by Ben (taken out of context). (One is a Politifact article that rates the discriminatory claim as False, so that’s really not Google’s fault.)
Point is that a person could do multiple tests like this and prove to themselves if Google is slanting the results or not.