The fact that there was no prosecution only proves that the DPP could not commit to that particular case. That is a far cry from exonerating the poster.

There was no crime,therefore nothing to be exonerated.
You may think you are being cute with wordplay, but you fool no one.
The photo made the point the subjects in the photo were young single males. Are they in fear of their lives, potential free loaders or economic migrants?
Asylum seekers are covered by the Dublin agreement, any other illegal migrants should be deported. They have regular channels they can apply through. If they cannot satisfy that set of criteria then deport them back from whence they came.