Possible Clues:

• Blitzkriegs
• Staple of campaign oratory
• Criticises a levy, we hear
• Storms
• One becomes offensive at having to pay it, by the sound of it
• Launches assault or criticism
• The sort of tax that sound most offensive
• Sounds as if one has to pay for what is so offensive
• That sounds like the sort of a duty that's offensive
• Criticises a levy in speech