Apple vs. Ethics

All I have heard lately about Apple has generally been negative things. Aside from the new Ipads and Iphones being invented its been bad news bears. When referencing the ethical values of Apple I think a lot of them have been neglected on recent standings.In Apple factories there have been issues concerning health and meeting safety guidelines. In a number of different photos (some shown below) there have been multiple protests by factory workers. Even in one of the photos if you look closely enough you will notice that in the foreground there are workers simply working on iPads or something of that nature but when you look at the background of the photo you will see individuals wearing full face masks. 

This brings about the questions:

What are the workers doing in the background that makes them need a mask but the people a foot away don't need masks?

Is this safe?

Is this ethical?

I cant answer the first question but I can only image that this is NOT safe. In no way could a chemical or whatever substance is so unsafe that masks must be worn, be able to be inhaled by others. I think that this situation clearly contradicts Apple's ethical framework. THey are supposed be a company of truth and honor. BUt instead they display themselves in a manner of disgust where their "ever-so-amazing" products are being created. To answer the third question, is Apple ethical. My answers seems to be NO.