“They were serving a warrant on someone for aggravated murder”
Attempted murder.
“It is unfortunate the man was shot, but the SWAT and police were looking for someone who had committed murder and would be armed and dangerous.”
Nope on the murder and maybe on the armed and dangerous. But since when do cops have to set off the trap to get around it? Direct assualt with overwhelming force is not the only answer. They could try doing some actual cop work instead of the automatic siege default.
Then, how do they justify their multi-million dollar SWAT Team budgets?
Use it or lose it.
In fact, they often consider such warrant arrest "backup" to be "field training under real world conditions."
I kid you not. SWAT Teams that are not used 100s of times a year, lose budget.
SWAT Teams that are used daily for routine police work (ratcheted way up to miltary raid proportions) get their budgets increased.
Follow the money.