MN 727 Safety

I have about 100 or so safety cards people over the years have given me.  (they all know I love the aviation industry and when I fell terminally ill in 1997 they acquired them for me)  I have honestly only ever accidentally on purpose taken 3 or 4 (SAA, Ansett and ?) of them in my inflight magazine.  The all say DO NOT REMOVE FROM THE AIRCRAFT on them but the two somebody (I know who but I am not telling!) accidentally removed from two Malaysian Airlines flights for me, say if you remove these cards you will face criminal prosecution!  How?  They take life a little too seriously there?