扫除天下

to sweep away evil / to purge (the world of crime)

down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action

day / sky / heaven

to get rid of / to remove / to exclude / to eliminate / to wipe out / to divide / except / not including

to sweep

broom

land under heaven / the whole world / the whole of China / realm / rule

to sweep / to clean with a brush / to sweep away (often fig.)