@NaturalElements, bogart is correct. Google does not use the description meta tag to rank sites. They only use it for the snippet. You do want to make sure that each description meta tag in a site is unique, but that still only affects the snippet they decide to use.
I've been doing SEO work since 1997 and I have never heard of anyone stealing someone's meta tags. I wouldn't worry about it. I don't think it will affect your site.
I checked some of those sites and the sites I checked are not stealing your description meta tag. Google will either display the description meta tag as the snippet, or they will grab a block of text on the page that surrounds the search phrase. In your example, all that is being displayed in the Google search are the pages that contain that distinct block of text somewhere on the page. That is just not a unique or original phrase.
You are misinterpreting what you are seeing. It is not an issue at all.
"It's inexcusable for scientists to torture animals; let them make their experiments on journalists and politicians." -Henrik Ibsen