Making an object the topic of a sentence

Common construction. The topic is still the object of the verb. Word order changes with topic first.
In the first construction below an unstated subject is the topic, often understood or from a previous sentence.

MNN17-5

ここに荷物を置かないで下さい。→ 荷物ここに置かないで下さい

I think this draws attention to the topic which in turn throws the focus forward.