What does the cryptic crossword clue "Some claim pedestrians cause an obstruction (6)" mean?

The definition is "cause an obstruction". The wordplay uses a hidden word. IMPEDE ( hidden word in [some] CLA IM PEDE STRIANS) The answer is IMPEDE.

Some claim pedestrians cause an obstruction (6)

Independent Cryptic #11772 | 19 Down | 2024-07-03 flower