I copied and pasted this from an article online:
What about other countries?
Is Rule Britannia really so offensive compared to the lyrics of other countries' hymns? Judge for yourself...
France: La Marseillaise
'They're coming right into your arms, to cut the throats of your sons, your comrades! Let's march, let's march, that their impure blood should water our fields.'
Ireland: The Soldier's Song
'Some have come from a land beyond the wave, sworn to be free, no more our ancient sireland shall shelter the despot or the slave.'
US: The Star-Spangled Banner
The US anthem celebrates 'bombs bursting in the air' as they 'gave proof through the night that our flag was still there'. It then celebrates the spilling of 'their blood'… for 'conquer we must'.
Italy: The Song of Italians
'The Austrian eagle has lost his plumes. This eagle that drunk the blood of Italy and Poland, together with the Cossack.'
Hungary: National Anthem
Remembering the Ottoman Empire as a 'barbarian nation', Hungary's anthem still includes the following suspect line about the suffering it endured at the hands of a nearby neighbour: 'the Turks' slave yoke we took upon our shoulders'.
Portugal: A Portuguesa
'To march against the enemy guns! … To arms, to arms, on land and sea!'
Mexico: National Anthem
'War, war without truce against who would attempt to blemish the honour of the fatherland!' ... The patriotic banners saturate in waves of blood.'