Jim Reeves, from the Communication Workers' Union, says the argument to close 70 Crown Post Offices is flawed because the business is profitable.
He spoke to ITV News Central outside the Kings Heath branch in Birmingham as staff went of strike this morning.
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A family from Nottinghamshire say it's 'revolting' the trap was found in a residential area where any animal or child could have been hurt.
A man has been charged with causing death by dangerous driving after a 22-year-old was killed in Rugeley last year.
Kick off between Aston Villa and Arsenal is 17:30 at Wembley Stadium.