Inaccurate and sensationalist. Earlier in the same paragraph:
It turned out that Mr. Szekely, who is an ordained minister and does not drink, do drugs or curse in front of ladies, did indeed have a warrant - for not appearing in court to face a charge of "criminal trespassing"
He wasn't arrested for being homeless; he was arrested for an outstanding warrant.
You may or may not be arrested, charged, or convicted for other crimes, but one thing's for sure: law enforcement seems to take it personally when you don't appear. Anyone with an outstanding warrant risks immediate arrest at any time. The reasonableness of the original charge doesn't matter.