It is a testament to the frequency of tear-gassing by Bahraini security forces that we usually put vivid images of its routine use in our daily LiveBlog.
Occassionally, however, there is a moment that is so dramatic amidst this routine that we think it should be in a separate feature. As EA's John Horne documents the companies who are supplying the tear gas, we present the moment on Wednesday when security forces opened fire in Sitra: