Is a picture being shared on social media with a caption that it is not Woodstock really a view of yesterday's Trump rally in Pennsylvania? No, that's not true: the picture actually does show the 1969 Woodstock festival.
An example of a post (archived here) with the wrong claim can be seen here with following caption:
No, This Is Not WOODSTOCK- This Is A TRUMP Rally In Pennsylvania Yesterday!
This is the photo in question:
But a quick reverse image search reveals it is actually a picture of the Woodstock festival in 1969 taken by Barry Z Levine and available through Getty Images:
Aerial view of the massive crowd in attendance at the Woodstock Music...
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Footage of the Trump rally can be watched here:
The confusion seems to have also been present in this post by Kevin P Sullivan on Facebookm:
He has since edited his post to fix the wrong images as can be seen in the post's edit history (you can see it for yourself, click the three dots in the top right corner of the post on Facebook, then "More options" and then "edit history".