I'd agree that some people who are anti-Israel are too keen on the "some of my best friends are Jews" line (a sure-fire way of telling an anti-Semite, etc). But it has to be possible to criticise Israel legitimately without being accused of antisemitism, for example by noting the, small(ish), number of various UN resolutions that apply to Israel and that they've generally paid little attention to (such as UNSC resolutions 42, 44, 45, 46, 48, 49, 50, 53, 54, 56, 57, 59, 60, 61, ..., 89, 92, 93, 101, 106, 111, 127, 162, 171, 228, 233, 234, 235, 236, 237, 242, 248, 250, 251, 252, 256, 258, 259, 262, 265, 267, 270, 271, 279, 280, 285, 298, 313, 316, 317, 332, 337 (we still haven't left the 1970s, by the way), 347, 425 (passed in 1978, asking Israel to withdraw from Lebanon, which they did... 22 years later), 427, 434, 444, 446, 450, 452, 465, 467, 468, 469, 471, 476, 478, 484, 487, 497, 498, 501, 508, 509, 515, 516, 517, 518, 519, 520... and at about this point I'm tired of running through the complete list of 225 UNSC Resolutions that Israel has largely just ignored.)
Or one could draw attention to the Golan Heights, that is occupied territory that Israel has consistently refused to withdraw from, and indeed is planning further occupation (or, if you prefer, settlement), programs, announced recently as well asfor all of the 35+ years in which, despite being recognised as part of Syria (or what's left of it), Israel has held on to (again, see something in the region of 30 of the resolutions above demanding that Israel let go; it hasn't).
Or is pointing that out anti-Semitic? Surely not. It's a simple statement of fact.