Trinity supported the protest by adding the pop-up in the screenshot below, thus blocking access to their site.
The text on the pop-up reads:
Imagine a world without free knowledge
The US government are currently considering legislation (SOPA/PIPA) that will give them almost absolute power over the internet and its content.
Already UK citizens can be extradited to the US for activities that are not illegal in the UK, because the US controls some of the technical infrastructure of the internet.
Today we are joining thousands of websites across the internet that are going on strike to protest against unwarranted US government control of the internet, and to raise awareness around this issue.