This argument doesn&#x27;t seem to have made much difference to the national DNA database[1].  Innocent people have had to go to court to get the rules changed and to have their DNA taken off the database.<p>&quot;They&quot; want everyone&#x27;s dna on the database.  And police have said that there&#x27;s no reason to take a person&#x27;s DNA off the database.<p>Your DNA is taken and added to the database if you&#x27;re arrested.  You don&#x27;t have to accept a caution; nor be tried, nor convicted, of a crime for them to keep it.  Some people can apply to have it taken off, but it stays on their for two years for everyone.<p>With the current climate I can easily see &quot;all immigrants need to go on the database&quot; being populist bit of legislation.<p>[1] typing that name, about my country, feels weird and wrong.