It was a curious sight for many magical folks,
Self explanatory.. the sign of the deathly hallows had intrigued many magical folks throughout wizarding history..
Be it the troubled ones or the wise ones, none escaped its echoes.
The " troubled ones" here are those affected by Grindelwald's regime ( think Krum's ancestors).. the "wise ones " here are those who knew the real meaning of the symbol.. either ways, the symbol meant something for both kinds..for " the troubled ones" it was a reminder of their ancestor's torture at the hands of Grindelwald and for "the wise ones" it meant that there was a possibility that the hallows really existed..
Its misplaced identity was formed after a quarrel ,
Yes, the symbol of deathly hallows was later identified as Grindelwald's symbol after Grindelwald and Dumbledore's friendship went kaput and Grindelwald started his own cruel regime far away from Dumbledore..
What it echoed through ages was both bloody and moral.
Again, self explanatory.. the deathly hallows history was bloody owing to the elder wand as well as Grindelwald's regime.. yet it did serve a moral purpose by imparting moral wisdom through 'The Tale of The Three Brothers.'
Its dual identity was most intriguing,
For it led to an unlikely tension between an odd man and an athlete who was reigning.
Yes, its misplaced duel identity did cause an unlikely tension between "odd nan" Xenopheleus Lovegood and "the reigning athlete" Victor Krum.
The troubled ones mistook it for something it was not,
The ones whose ancestors were tortured by Grindelwald mistook it as Grindelwald's symbol.
The wise ones always knew what it was, whereas some never gave it a second thought.
The ones who knew what the symbol stood for knew about the deathly hallows and others who didn't believe in the hallows and had nothing to do with Grindelwald were never bothered by the symbol.
It led to many a curious adventures,
Most of which always ended up being disasters.
Self explanatory... every adventure undertaken under the influence of the symbol ended up being disastrous, be it Dumbledore- Grindelwald or Harry,Hermione, Ron- Xenephelous's house..