But sometimes you might get a chance to catch the national mood.
Take today's killings in Cumbria.
For most people, a difficult to understand tragedy.
But, for the Libertarian Alliance, the ideal opportunity to dash out a press release arguing that it would never happen if only we were to repeal all firearms restrictions:
“The Libertarian Alliance believes that all the Firearms Acts from 1920 onwards should be repealed. The largely ineffective laws of 1870 and 1902 should also be repealed. It should once again be possible for adults to walk into a gun shop and, without showing any permit or proof of identity, buy as many guns and as much ammunition as they can afford".
After all, as the LA points out , in the US, "at least one campus shooting was brought to a premature end by armed civilians".