Not seeing animations with chrome

Using chrome (v55.0 on OSX) I navigated to https://edgent.apache.org/docs/streaming-concepts. I didn't see the animations. I noticed the protections shield shown in the screenshot attachment. Can anything be done on the site to make this all "just work"?

Using firefox the animations on https://edgent.apache.org/docs/streaming-concepts show up fine (though it shows the connection as insecure and apparently I may have allowed that in the past).