While that may help explain the unproductive, unconstitutional behavior he experienced (now normalized at our borders), it does not excuse it.
[1] https://en.wikipedia.org/wiki/Disinformation_in_the_Russian_...
The far left is within their First Amendment rights to create "all the 'end ___ hate' campaigns" they want. The far right is within their First Amendment rights to create all the "hate _____" campaigns they want.
Bystanders, commercial entities, private schools, your friends and family are allowed to be friendly with you or disown you per their own preference for which side you take. They're even allowed to call you mean names like "ignorant fascist incel" if they want. And you're allowed to call them mean names too!
The government is not allowed to utilize state power to suppress either side of the hate or not-hate debate. It is not allowed to utilize state power to compel the "end hate" crowd to be nice to, give jobs to, maintain platforms for, or educate the "hate" crowd, nor vice versa.
"anyone who disagrees with you is obviously ill"
It's like saying, "the inability to add 1 + 1 is common among people who never attended an arithmetic class."