One homemade placard can be more effective than all the printed placards on a march (not just because 85% of placards have 'Socialist Worker' on them)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/93001633@N00">Pete Birkinshaw</a> from Manchester, UK
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/binaryape/2872740307/">85%</a>