'There are corrupt police forces still throwing people out of windows all over the world - we just don't hear about it,' he says. 'And anyway, you can direct the satire in this play at any kind of institution. You have to have healthily subversive genes to enjoy doing this play - and I do.'
Ifans draws a parallel between this play and Twin Town - the Welsh film he appeared in early on alongside his brother Llyr Evans and which he describes as also having a robust disregard for authority.
That he clearly admires both works could suggest he's finally starting to take his own career seriously, or at least realising he can have a bit of choice over his roles. However, Ifans - not one for speculation - simply sees it as a way of reminding himself why he does what he does. 'Ultimately, it's a play about the joy of performing,' he says. 'It's as easy as that.'
Accidental Death Of An Anarchist, until April 19, Donmar Warehouse, Earlham Street WC2, tonight 7pm, otherwise Mon to Sat 7.30pm, £15 to £26. Tel: 020 7369 1732. Tube: Covent Garden
The top five... Political satires on stage
Dario Fo used the suspicious death in custody of one of the men accused of bombing a bank as the jumping-off point for his hilarious satire. But he's not the only 20th-century playwright to find grim political realities an irresistible dramatic topic...
1. The Trial
Franz Kafka's novel of political and social paranoia was transformed for the stage by Steven Berkoff. The predicament of its bewildered anti-hero, desperate for forgiveness despite being ignorant of his crimes, still resonates today.
2. Feelgood
Satirist, former Gordon Brown speechwriter and staunch Old Labourite Alistair Beaton (pictured) deftly took the mickey out of our current government's obsession with spin in this contemporary satire.
3. Pravda
David Hare and Howard Brenton's portrayal of a ghastly newspaper owner, played by Anthony Hopkins, was a much-appreciated satire of the Thatcher years.
4. The Bedbug
Mayakovsky's sharp look at Soviet greed and corruption sees a moneygrubbing prole frozen in time for 50 years, at which point his parasitic nature, along with that of the bedbug frozen with him, becomes an object of scientific fascination.
5. Big Dada
South African company Third World Bunfight mocked the barbarous eight-year rule of murderous Ugandan dictator Idi Amin to surprisingly comic effect.