Politically motivated terrorism in Scotland?

People in council offices in Angus had to evacuate as a suspicious package was found that had a letter claiming there was anthrax inside and said "get SNP out, Tories in". This came a day after a suspicious package which contained crystals which were intended to alarm people was found in an SNP MP's constituency office. Nothing yet to say there was any anthrax but still horrible to even threaten something like that. Can't help but think it would be plastered over BBC news had it been an SNP supporter doing this to the Tories but no mention of it so far.