Is Google knowingly profiting from malware?

Lately, when using chrome, and accessing blogger pages containing google monetizing ads, I got a warning that these very ads are malware providers and could "infect my Mac". OK first of all, a PC virus CANNOT infect a mac.. All the HTML mac viruses are accounted for , and protected against, in the latest Apple updates, so it is simply NOT true.
 But, worse than that, Google is responsible for the ads they support on Blogger, and if they KNOW it's a virus hazard, why give a *warning* that their own site (Blogger) is harboring it, instead of FIXING the problem?
 Lastly, this post may not even see the light of day for very long after it's been posted, at least on blogger, as they have been very active latelty in censoring *anything* critical of certain large corporations, certain areas of government, and You Tube comments and posts, and comments on blogs themselves. Since censored items do not leave any trace once removed, it's a very invisible assault on the population. Comments that mention Christianity are often censored as well.
This world has gone to hell....