The suffragettes and the National Gallery

I seriously wonder sometimes if the entire nation suffers from some strange form of collective amnesia when it comes to the suffragettes! Everybody remembers that some suffragettes slashed pictures in art galleries. Here is an exhibition about this phenomenon which is being held at the National Portrait Gallery this summer;

http://www.npg.org.uk/whatson/display/2014/suffragettes-deeds-not-words.php?utm_content=bufferca93f&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

What is really weird though is that no mention is being made at all of the attempt by the suffragettes to blow up the National Gallery by means of 10lb of dynamite;

http://news.google.com/newspapers?nid=2313&dat=19130516&id=lmwnAAAAIBAJ&sjid=9AMGAAAAIBAJ&pg=2767,1498013


Why is there this determination to sanitise the  suffragettes and airbrush their more dangerous expoits from official history?

The first terrorist bomb of the twentieth century to be detonated in Northern Ireland.

On August 1st, 1914, a large bomb  exploded outside Christ Church Cathedral, in the Northern Irish town of Lisburn. The blast, caused by a charge of dynamite, damaged some ancient windows and left a crater four feet deep. This, the first terrorist bomb to be planted in Ulster in the twentieth century, was set off not by the IRA, but by a group of suffragettes. Just one more episode in the forgotten history of suffragette terrorism.