The 41-year-old man rode his horse into the Clermont Showground about 3.30pm on Sunday before charging at the gates where the woman was standing, Queensland Police said.
The 62-year-old NSW woman fell to the ground suffering bruising and abrasions and was taken to Clermont Hospital in a stable condition.
The man was arrested after he tried to flee from police into bushland. He is being questioned by police at Clermont station.
About 350 people gathered at Clermont Showground on Sunday as part of an anti-Adani convoy spearheaded by former Greens leader Bob Brown and which has travelled from Tasmania to Queensland.
Mr Brown described Sunday’s incident as a “senseless attack”.
The convoy protesting against the proposed Carmichael mine outraged Clermont locals, with the town’s three pubs refusing to serve those opposed to the mine.
The group is expected to leave the central Queensland town on Monday and will travel through Rockhampton and Yepoon as it makes its way to Parliament House in Canberra.
Send us an email, making it clear which story you’re commenting on and including your full name (required for publication) and phone number (only for verification purposes). Please put “Reader views” in the subject.
We’ll publish the best comments in a regular “Reader Views” post. Your comments can be brief, or we can accept up to 350 words, or thereabouts.
InDaily has changed the way we receive comments. Go here for an explanation.
Local News Matters
Media diversity is under threat in Australia – nowhere more so than in South Australia. The state needs more than one voice to guide it forward and you can help with a donation of any size to InDaily. Your contribution goes directly to helping our journalists uncover the facts. Please click below to contribute to InDaily.