This is a non sequitur. Anybody who has wantonly broken a nation's rules and laws to enter that country cannot then claim that they possess rights in that country!
Who's to blame?
The EU.
The ECHR.
The LibLabCon.
Leftists who support illegal immigrants.
Do-gooders who support illegal immigrants.
Inertia-ridden civil servants in Border Control & The Home Office.
In other words - THE USUAL SUSPECTS!
This sign is misleading. Children, families, old people and to a certain extent, women, do not form the main corpus of illegals. The vast majority are young or relatively young men.